RELEASE NOTES for Perl version of Sisimai

releases: "https://github.com/sisimai/p5-sisimai/releases"
download: "https://metacpan.org/pod/Sisimai"
document: "https://libsisimai.org/"

v5.6.0

release: "Mon, 2 Feb 2026 18:30:22 +0900 (JST)"
version: "5.6.0"
changes:
- Changes in Bounce Reason Categorization
  - Update bounce status mappings in Sisimai::SMTP::Status.
  - #634 Consolidate four bounce reasons into two:
    - Merge TooManyConn and Speeding into RateLimited.
    - Merge ExceedLimit and MesgTooBig into EmailTooLarge.
  - #640 Update assigned reasons in rhost/for-*.go.
  - #642 Error message patterns improvement.
    - Merge similar error message patterns and remove ambiguous ones.
    - Attachment-related errors have been moved from PolicyViolation to ContentError.
- Reorganize the internal status code #638
  - Temporary error 4.0.9** has been changed to 4.9.***.
  - Permanent error 5.0.9** has been changed to 5.9.***.
- #636 Sisimai::String->token has been moved to Sisimai::Fact->maketoken().
- Happy Birthday to Suzu (formerly known as "Neko-dono" Michitsuna).

v5.5.0

release: "Fri, 5 Dec 2025 17:25:22 +0900 (JST)"
version: "5.5.0"
changes:
- #599 #600 Change file encodings from sjis to UTF-8.
- #601 #603 Update SMTP reply codes defined in Sisimai::SMTP::Reply::Associated.
- #604 Implement Sisimai::SMTP::Status->is_ambiguous method.
- #602 Sisimai partially supports the media types described in RFC6533 such as message/global.
- #606 #607 Fix the index out of range bug in multipart blocks.
- #605 #608 Implement Sisimai::Lhost::Mimecast.
- #566 #548 Remove the following accessors and JSON keys of Sisimai::Fact deprecated at v5.2.0.
  - smtpagent (use decodedby instead)
  - smtpcommand (use command instead)
- #611 Sisimai::Lhost::InterScanMSS has been renamed to Sisimai::Lhost::TrendMicro.
- #615 New error message pattern for Spamhaus in Sisimai::Reason::Blocked. Thanks to @vhenon
- #617 Sisimai::Lhost::MailMarshalSMTP has been renamed to Sisimai::Lhost::MailMarshal.
- #618 #620 #621 #623 #624 Fix wrong reason names and typos.
- #619 Update Sisimai::RFC3834 for detecting Supend reason.
- #622 Message-ID related errors are classified as NotCompliantRFC.
- #626 Fixed bugs in Sisimai::Address->is_emailaddress.
- #627 Check that the decoded MIME part is a binary or not in Sisimai::RFC2045.
- #628 #631 Update SMTP error codes and messages in the following Sisimai::Rhost packages:
  - Apple inactive email address indicates Suspend
  - Facebook Update AuthFailure and MailboxFull
  - FrancePTT Update AuthFailure, Blocked, Rejected, and TooManyConn
  - GoDaddy Add TooManyConn
  - MessageLabs Add many error message patterns
  - Microsoft Implement SMTP error codes described in Outlook Postmaster/Troubleshooting
  - Tencent Add Speeding
  - Zoho Implement as a new module
- #633 EXPERIMENTAL: Implement toxic field in the decoded results.

v5.4.1

release: "Sun, 31 Aug 2025 09:22:25 +0900 (JST)"
version: "5.4.1"
changes:
- #596 Support a bounce mail returned from privaterelay.appleid.com.
- #595 Update SMTP error and status codes of Gmail updated in August 2025.
- #592 sisimai works on Perl 5.42.

v5.4.0

release: "Tue, 1 Jul 2025 20:22:22 +0900 (JST)"
version: "5.4.0"
changes:
- #583 #588 #589 Implement the new status code 5.7.515 as authfailure and other undocumented status codes begin with 4.4. as systemerror of Microsoft in Sisimai::Rhost::Microsoft.
- #590 #591 Implement new status codes of Google: 4.7.40 and 5.7.32 as authfailure.
- #586 #587 Some internal sub routines do not return undef, standardize return values to align with zero-value principle.

v5.3.0

release: "Sat, 29 Mar 2025 06:03:17 +0900 (JST)"
version: "5.3.0"
changes:
- Collateral update due to the Go version of Sisimai's broken module path fix.
- SMTP reply code improvements
  - Update the list of SMTP reply codes in Sisimai::SMTP::Reply
  - Implement Sisimai::SMTP::Reply->associatedwith()
  - Implement Sisimai::SMTP::Status->is_explicit()

v5.2.1

release: "Wed, 12 Mar 2025 06:50:22 +0900 (JST)"
version: "5.2.1"
changes:
- Bug fix: substr outsite of string and Use of uninitialized value errors at find() method in Sisimai::SMTP::Status. #574 #575 Thanks to @ViktorNacht
- Implement Sisimai::Rhost::Cloudflare #534 #578
- #573 NTT DOCOMO (Major Japanese mobile carrier) no longer returns a bounce mail due to domain rejection or similar email settings, but instead were being delivered to the spam folder after March 13th. #576

v5.2.0

release: "Tue, 25 Feb 2025 11:05:09 +0900 (JST)"
version: "5.2.0"
changes:
- Keep compatibility with the Go language version of Sisimai #547 #558 #567
  - BREAKING CHANGES AT EXTERNAL USER APIs
    - Changes in accessors of Sisimai::Fact and key names in JSON string
      - smtpagent has been renamed to decodedby #548
      - smtpcommand has been renamed to command #548
      - Removed accessors/keys are still available until v5.5.0
      - New accessor and key feedbackid, it is a field for the Feedback-ID: header of the original message #568
    - New bounce reason Sisimai::Reason::Suppressed
    - New bounce reason Sisimai::Reason::FailedSTARTTLS #562
  - THERE ARE SOME BREAKING CHANGES AT INTERNAL APIs
  - Sisimai::SMTP::Error has been renamed to Sisimai::SMTP::Failure and the following methods implemented: #542
    - is_temporary()
    - is_hardbounce()
    - is_softbounce()
    - soft_or_hard() has been removed
  - Changes in Sisimai::Rhost
    - get() method has been renamed to find()
    - Fix bug in code to check the domain part of an email address as a remote hostname
    - Add a new error message pattern: hosted tenant which has no mail-enabled subscriptions' in Sisimai::Rhost::Microsoft
    - Implement name() method
    - Bug fix in Sisimai::Rhost::Facebook
  - Remove hardbounce accessor from Sisimai::Lhost #555
  - Implement Sisimai::RFC3464::ThirdParty
  - Remove the following MTA modules from Sisimai::Lhost #557
    - Sisimai::RFC3464 can decode a bounce mail returned from services/MTAs below #551
      - Amavis
      - AmazonWorkMail
      - Aol
      - Barracuda
      - Bigfoot
      - Facebook #545
      - McAfee
      - MessageLabs
      - Outlook
      - PowerMTA
        
        Some codes for checking heaaders have been moved to Sisimai::RFC3464::ThirdParty
      - ReceivingSES
      - SendGrid
      - SurfControl
      - X5
      - Yandex
    - Sisimai::Lhost::Exim can decode a bounce mail returned from services/MTAs below
      - MailRu
      - MXLogic
    - Sisimai::Lhost::qmail can decode a bounce mail returned from services/MTAs below
      - X4
      - Yahoo
    - Sisimai::Lhost::Exchange2007 can decode a bounce mail returned from Office365 #553
  - Sisimai::Lhost::GSuite has been renamed to Sisimai::Lhost::GoogleWorkspace
  - Sisimai::Lhost::AmazonSES decodes only JSON formatted bounce mail notified from Amazon SNS
    - The bounce mail from Amazon SES which have no JSON string is decoded by Sisimai::RFC3464
  - Each error code table of the following MTA modules (removed at issue #557) have been moved to Sisimai::Rhost::* #559
    - Aol
    - Facebook
    - GSuite
    - MessageLabs
    - Outlook
  - Sisimai::MDA has been renamed to Sisimai::LDA
  - Sisimai::RFC791 for the IPv4 address implemented #560
    - Sisimai::String->ipv4 has been moved/renamed to Sisimai::RFC791->find
    - Implement Sisimai::RFC791->is_ipv4address
  - Sisimai::RFC1123->is_validhostname() has been renamed to is_internethost()
  - Implement Sisimai::RFC1123->find()
  - #552 Sisimai::RFC1894->field() method detect a comment string (returns an array which have 5 elements: ["field-name", "value-type", "value", "field-group", "comment"])
  - Reporting-MTA indicates lhost in Sisimai::RFC1894 (bug fix)
- Code improvement and bug fix at Sisimai::Lhost::Exim
  - Remove needless condition for getting error messages
  - Rewrite code for getting an SMTP reply code and a delivery status code
- Warn if Sisimai::Message->load was called #537 #538
- Remove unused method Sisimai::Order->default #539
- Fix bug in Sisimai::Message->tidy() method #540
- Code improvement in Sisimai::RFC5322 and Sisimai::ARF
- Fix the minimum and the maximum SMTP Reply code: 221 and 557 in Sisimai::SMTP::Reply
- The first argument need not to be a reference at Sisimai::SMTP::Transcript->rise()
- Fix typo in Sisimai::RFC1894 (X-Actual-Recipient)
- Fix bug in Sisimai::Message->tidy(): ; is missing when the value of Diagnostic-Code field has multiple lines, And large scale code improvements.
- Fix bug in Sisimai::Reason::VirusDetected->true(); fix HELO with EHLO
- Add a new error message pattern in the followings:
  - Sisimai::Reason::BadReputation
  - Sisimai::Reason::Blocked
  - Sisimai::Reason::Filtered
  - Sisimai::Reason::MailboxFull
  - Sisimai::Reason::MesgTooBig
  - Sisimai::Reason::RequirePTR
  - Sisimai::Reason::SpamDetected
  - Sisimai::Reason::SystemError
- Remove regular expressions from error message patterns at the following classes: #543
  - Sisimai::Reason::Blocked
  - Sisimai::Reason::MailerError
  - Sisimai::Reason::SpamDetected
- Fix typo in Sisimai::Rhost::YahooInc Thanks to @bohwaz #546
- Bug fix: Unstable matching for getting an Sisimai::Rhost::* module name when the bounce mail sent from Microsoft to Aol (Random key sort order of the Hash)
- Add sv-SE in Sisimai::Lhost::Exchange2007
- Large scale code improvement in Sisimai::Lhost::V5sendmail

v5.1.0

release: "Mon, 1 Jul 2024 12:02:22 +0900 (JST)"
version: "5.1.0"
changes:
- #531 #535 Remove v4 compatible features
  - Sisimai->make()
  - Sisimai::Fact->softbounce()
- #478 #526 Implemenet Sisimai::Lhost::DragonFly
  - Add 30 sample emails generated by DMA: DrangonFly Mail Agent (lhost-dragonfly-*.eml)
- #523 Consolidate error messages scattered under Sisimai::Reason::* into Sisimai::Rhost::* classes for each email service
  - Sisimai::Rhost::YahooInc for https://senders.yahooinc.com/smtp-error-codes/
  - Sisimai::Rhost::Apple for iCloud Mail
  - The following sample emails in set-of-emails/maildir/bsd:
    - 3 sample emails (rhost-yahooinc-0[1-3].eml)
    - 4 sample emails (rhost-apple-0[1-4].eml)
- #524 #525 #529 Sisimai::Rhost improvements
  - Update the error code list and error message patterns in the following classes:
    - Sisimai::Rhost::Cox
    - Sisimai::Rhost::FrancePTT
    - Sisimai::Rhost::GoDaddy
    - Sisimai::Rhost::Mimecast
    - Sisimai::Rhost::Spectrum
    - Sisimai::Rhost::Tencent
  - Each error message should be compared with the lowercased string
  - Follow any updates of the SMTP error code and message list in each email services related to AuthFailure, BadReputation, RequirePTR, and other error reasons added at v5
  - No longer needed method `Sisimai::Rhost->match' has been removed
- #339 #530 Add 8 sample emails (lhost-opensmtpd-1[0-7].eml)generated by OpenSMTPD 6.8.0p2
- #331 #532 Add 9 sample emails (lhost-qmail-1[1-9].eml) generated by notqmail 1.08
- #209 #220 Add 6 sample emails (lhost-qmail-2[0-5].eml) generated by indimail 3.0.7 #533
- Sisimai works on Perl 5.40.0 ef8d1f8

v5.0.3

release: "Wed, 22 May 2024 14:00:22 +0900 (JST)"
version: "5.0.3"
changes:
- Declare use v5.26; at each file using the postfix dereference #511
  - Replace use feature ":5.10"; with use v5.26;
  - https://www.cpantesters.org/cpan/report/4a49b2fa-e101-11ee-9c91-c03a6e8775ea (Slaven ReziÄ
  - https://www.cpantesters.org/cpan/report/8345bf54-e192-11ee-bcdd-1845aa8c77b5 (David Cantrell)
  - https://www.cpantesters.org/cpan/report/3170e9aa-e526-11ee-98b0-b3c3213a625c (Chris Williams)
  - https://www.cpantesters.org/cpan/report/e51d7d7a-e58e-11ee-922b-530cbea18e0e (Andreas J. KÃ¶nig)
- Remove .travis.yml from this repository
- Follow updates in Gmail SMTP errors and codes on Apr 29 and May 10 at Sisimai::Rhost::Google #513 #515 #519
  - https://support.google.com/a/answer/3726730?hl=en
  - https://github.com/azumakuniyuki/feb-2024-no-auth-no-entry/commit/1d6adede
  - https://github.com/azumakuniyuki/feb-2024-no-auth-no-entry/commit/d477b178
  - Implement SMTP error codes as follows: 4.7.23, 4.7.30, 4.7.32, 5.7.29, and 5.7.30
  - Shortened error message patterns to make them more adaptable to minor sentence changes.
- Multibyte characters in the code and comments have been replaced with ASCII characters. #514
- Import sisimai/rb-sisimai#280 Deal the Apple unsubscribe notification as an ARF message #516
- Add the following error message patterns returned from Exchange Online #517
  - 4.4.317, 5.4.317: STARTTLS is required to send mail
  - 4.4.318, 5.4.318: Connection was closed abruptly (SuspiciousRemoteServerError)
- #518 Added 16 error message patterns into the following reasons:
  - Blocked
  - Expired
  - Filtered
  - MailboxFull
  - NoRelaying
  - Suspend
  - UserUnknown
- #320 #520 use Codecov for the coverage

v5.0.2

release: "Wed, 13 Mar 2024 13:00:00 +0900 (JST)"
version: "5.0.2"
changes:
- #507 Migrate the CI from TravisCI to GitHub Actions
- Fixed an issue where constant initialization would fail on Perl 5.26
- 5.7.23 returned from Office365 is an error related to SPF vilation (authfailure)
- #508 Fixed an issue that Sisimai could not get the value of alias address correctly when an email forwarded and bounced
- Sisimai::RFC5322->received now returns a list including all the elements except date time and (comments) found in the Received header
- Update the error message patterns in Sisimai::Rhost::Mimecast
- Update the error message patterns in the followings:
  - AuthFailure
  - Blocked
  - Expired
  - MailboxFull
  - SecurityError
  - SpamDetected
  - Suspend

v5.0.1

release: "Sun, 3 Mar 2024 17:17:17 +0900 (JST)"
version: "5.0.1"
changes:
- #464 Import the commit 78465c79970474602be796232bea345909078b9a at t/023-mail-stdin.t
- #501 Implement three SMTP status codes as follows: 5.7.28, 5.7.29 and 5.7.30 described in https://www.iana.org/assignments/smtp-enhanced-status-codes/smtp-enhanced-status-codes.xhtml
- #502 The values of reason of postfix-28.eml and postfix-29.eml in decoded results have been fixed to notcompliantrfc.
- #504 Implement and update SMTP error codes, reply codes, and error messages described at Google https://support.google.com/a/answer/3726730?hl=en in Sisimai::Rhost::Google.
- #505 Fix bugs in t/500-fact.t and t/600-lhost-code.t at the code use YAML;. In Sisimai, The YAML module is an optional and not required. Thanks to @eserte

v5.0.0

release: "Fri, 2 Feb 2024 23:22:22 +0900 (JST)"
version: "5.0.0"
changes:
- INCOMPATIBLE CHANGES SINCE SISIMAI VERSION 4
  - Sisimai version 5 requires Perl 5.26 or later
    - #446, 448 Use the postfix dereference
  - Sisimai->make marked as obsoleted, use Sisimai->rise instead
  - Sisimai does not return the result which reason is vacation by default. Use vacation => 1 option at Sisimai->rise() method to get the parsed results for vacation reason. #436 #437
  - Sisimai::Data and Sisimai::Fact
    - #419, #420 Sisimai::Data class has been renamed to Sisimai::Fact
    - #402 Sisimai::Data->softboucne marked as obsoleted and will be removed at v5.1.0, use Sisimai::Fact->hardbounce instead
  - #401 Sisimai::Message
    - Sisimai::Message no longer create an object
    - Sisimai::Message->make has been renamed to Sisimai::Message->rise
  - #399 Callback feature
    - Parameter hook for a callback has been removed from Sisimai->make and Sisimai->dump. Use the first element of the c___ parameter for setting a callback method instead.
    - Parameter c___ is a parameter of Sisimai->rise and Sisimai->dump, is an array refer- ence and have two elements:
    - The first element of c___ is the same as the hook parameter, is for a callback method email headers and entire message body
    - The second element of the c___ parameter is for a callback method for each email file in Maildir/. The callback method is called at the end of each email file parsing.
    - Implement the following error reasons:
      - AuthFailure is a bounce reason which rejected due to SPF, DKIM, or DMARC failure #467
      - BadReputation is a bounce reason which rejected due to an IP address reputation #469
      - NotCompliantRFC is a bounce reason which rejected due to non-compliance with RFC
      - RequirePTR is a bounce reason which rejected due to missing PTR or having invalid PTR
      - Speeding is a bounce reason which rejected due to exceeding a rate limit or sending too fast #466
- Implement Sisimai::RFC2045: Born again Sisimai::MIME for compatibility with the Go language version of Sisimai #407
- #429 Sisimai::Message->rise() parses twice when the entire message body of a bounced mail is multi parted begins with "message/rfc822".
- #431 Add error messages in some European languages into Office365 and Domino
- #445 Implement Sisimai::STMP::Transcript for parsing a transcript of session log
- #451 Reduce substitution code by using for
- #490, #495 Reduce 82% of regular expressions
  - Implement the following methods:
    - Sisimai::SMTP::Command->test
    - Sisimai::SMTP::Reply->test
    - Sisimai::SMTP::Status->test
    - Sisimai::SMTP::Status->prefer
    - Sisimai::String->aligned
    - Sisimai::String->ipv4
- Rename the following classes in Sisimai::Rhost:
  - Sisimai::Rhost::Microsoft (ExchangeOnline)
  - Sisimai::Rhost::Google (GoogleApps)
  - Sisimai::Rhost::Tencent (TencentQQ)
- Add a sample email bounced from Rakuten Mobile: sisimai/set-of-emails#20
  - lhost-postfix-76.eml (userunknown)
- Add sample emails bounced from Amazon SES
  - lhost-postfix-77.eml (norelaying)
  - lhost-postfix-78.eml (contenterror)
- Happy Birthday to Suzu a.k.a. "Neko-dono" Michitsuna

v4.25.16p1

release: "Thu, 1 Feb 2024 12:25:22 +0900 (JST)"
version: "4.25.16p1"
changes:
- #497 Tiny code improvement on Sisimai::Lhost::EinsUndEins to parse bounce emails in slightly different formats.

v4.25.16

release: "Tue, 16 May 2023 15:03:56 +0900 (JST)"
version: "4.25.16"
changes:
- Fix issue #491, Remove X-Auto-Response-Suppress: header from the inspection targets of Sisimai ::RFC3834 as it does not indicate an auto-response email. Thanks to @whity
- Fix issue #492, To avoid slowing down the parsing speed, reduce the size of the email by re- moving unnecessary parts (text/html, application/*, and image/*). Thanks to @gody01

v4.25.15

release: "Thu, 22 Dec 2022 13:00:22 +0900 (JST)"
version: "4.25.15"
changes:
- #464 Fix a bug related to a handle->close in t/023-mail-stdin.t Thanks to CPAN Testers:
  - https://www.cpantesters.org/cpan/report/d49e1af4-4157-11ed-af16-c84d753c3a36
  - https://www.cpantesters.org/cpan/report/a0412418-49fe-11ed-b08f-a5e1b655df6e
  - https://www.cpantesters.org/cpan/report/eb7fbeb2-546c-11ed-ac00-78c860ca80ec
  - https://www.cpantesters.org/cpan/report/4c3721d4-5763-11ed-8a1d-3dcb3994ee8b
  - https://www.cpantesters.org/cpan/report/6345c226-7848-11ed-afec-b281abd50193
  - https://www.cpantesters.org/cpan/report/c52dd804-6f1d-11ed-9b5d-686ea04ca71f
  - https://www.cpantesters.org/cpan/report/60a09c2a-6af7-11ed-affb-ea61756bb578
- #465 Fix an error reason "5.2.1 exceedlimit" of an error message: "450-4.2.1 The user you are trying to contact is receiving mail at a rate that prevents additional messages from being de- livered" to "toomanyconn" at GoogleApps.pm in Sisimai/Rhost.
- Add many error message patterns at the following classes in Sisimai/Reason
  - Blocked
  - ContentError
  - Filtered
  - NetworkError
  - NotAccept
  - PolicyViolation
  - Rejected
  - SpamDetected
  - TooManyConn
  - UserUnknown
- When the value of diagnosticcode has enough error message for detecting a bounce reason, expired will change to proper reason
- Update code in Sisimai::Lhost::GoogleGroups module to parse well a bounce mail even if an e- mail address of X-Failed-Recipients header does not include a domain @googlegroups.com #470
- Import #471 from Sisimai v5, Implement Sisimai::Rhost::NTTDOCOMO to parse more strictly a bounce mail returned from mfsmax.docomo.ne.jp
- Import #475 from Sisimai v5, Implement Sisimai::Rhost::Mimecast
- Add the following error messages at `Sisimai::Rhost::ExchangeOnline:
  - 451 4.7.650 The mail server ... has been temporarily rate limited due to IP reputation (S775)
  - 550 5.7.1 ... Please contact your Internet service provider since part of their network is on our block list (S3150)
  - Error messages of Exchange Server 2019 #476
- Add many error messages at Sisimai::Rhost::GoogleApps, Import #479
- Import sisimai/rb-sisimai#244, Prevent ReDOS in Sisimai::String->to_plain method #484

v4.25.14

release: "Mon, 15 Aug 2022 14:00:22 +0900 (JST)"
version: "4.25.14"
changes:
- #461 Fix 2 bugs with the value of "timestamp" at the parsed result.

v4.25.13

release: "Mon, 1 Aug 2022 16:06:55 +0900 (JST)"
version: "4.25.13"
changes:
- #455 Fix a bug related to utf8-flag in the value of Subject: header at test: t/501-data-json.t. Thanks to CPAN Testers:
  - http://www.cpantesters.org/cpan/report/8d7d0a08-f7a2-11ec-b1f1-9c81f839ead0
  - http://www.cpantesters.org/cpan/report/de86d022-f898-11ec-a81a-c3b444d77217
  - http://www.cpantesters.org/cpan/report/3169fa64-0198-11ed-a82a-d5de2185f16d
  - http://www.cpantesters.org/cpan/report/ea451228-02ae-11ed-a985-cd0ba7eeaf61

v4.25.12

release: ""Mon, 22 Nov 2021 12:22:22 +0900 (JST)"
version: "4.25.12"
changes:
- #438 Localize global variables used by YAML and YAML::Syck:$YAML::Syck::*, $YAML::*. at Sisimai::Data::YAML module. Thanks to @bschmalhofer
- #441 Add a new error code of La Poste at Sisimai::Rhost::FrancePTT module, a new sample email rhost-franceptt-12.eml into set-of-emails/ directory. Thanks to @vhenon
- Add rfc3464-41.eml and rfc3464-42.eml
- Remove all the HTML elements from the value of "diagnosticcode".
- #442, #443 Fix serious bugs:
  - Both of the values of deliverystatus and replycode detected from the message body did not use at Sisimai::Lhost::Exim.
  - true method strictly checks the value of smtpcommand at some classes in Sisimai/Reason directory. For example, when a detected reason is spamdetected and virusdetected the val- ue of smtpcommand should be DATA or an SMTP command to be sent after DATA.

v4.25.11

release: "Mon, 22 Feb 2021 21:11:22 +0900 (JST)"
version: "4.25.11"
changes:
- Import some commits from Sisimai version 5 preview #422
  - Improved code for getting an email address in Sisimai::Address
  - Improved code for checking the day of month value, for converting a full month name and a full day of the week at Sisimai::DateTime
  - Improvement code for picking text blocks of message/rfc822 part in RFC5322
  - Add 60+ error message patterns
  - Improved code for encodings in Sisimai::Lhost::Domino, Sisimai::String

v4.25.10

release: "Tue, 22 Dec 2020 13:22:22 +0900 (JST)"
version: "4.25.10"
changes:
- #384 Remove the following old methods (marked as obsolete from v4.25.6)
  - Sisimai::Mail->close (automatically closes at the EOF)
  - Sisimai::Mail->type (use Sisimai::Mail->kind instead)
  - Sisimai::Mail->mail->* (use Sisimai::Mail->data->* instead)
- #415 Code improvement for Source-IP field on ARF. Thanks to @cucx
- #416 Exim and X3 in Sisimai::Lhost improved. Thanks to @AmarkhiS
- #418 Updates for DMARC and SPF related errors
  - The value of reason rejected due to DMARC policy is policyviolation
  - The value of reason rejected due to no SPF record is rejected
  - Add some sample emails related to above into set-of-emails/
- #421 Fixed a serious bug at the value of token in the parsed results only in the Perl version of sisimai since v4.22.1p1 (Released 2017 Summer). The value of token generated by Sisimai:: Data->new method between v4.22.1p1 to v4.25.9 returns a meaningless value because there were wrong arguments for Sisimai::String->token method call.

v4.25.9

release: "Sat, 3 Oct 2020 22:00:00 +0900 (JST)"
version: "4.25.9"
changes:
- Fix typo in Sisimai::SMTP::Error. Thanks to @hekeli #410
- #411 Fix a serious performance problem in regular expressions using .+ at some error message patterns in Sisimai::Reason. Thanks to Martin Kluge.
- #414 Support Null MX (RFC7505) on Sendmail sisimai/set-of-emails#4

v4.25.8

release: "Fri, 17 Jul 2020 11:59:49 +0900 (JST)"
version: "4.25.8"
changes:
- Repository URL was changed to https://github.com/sisimai/p5-sisimai
- Sisimai::Message->make method was merged into Sisimai::Message->new
- Sisimai::Message->divideup returns an array (faster than a hash) #390
- Remove unused code blocks for deciding the order of email header fields at Sisimai::Data-> make() method
- Remove old parameters: datasrc and bounces at the callback feature #394
- Implement Sisimai::Rhost::Spectrum for parsing bounce mails returned from https://www.spectrum.com/. Thanks to @meir-w #395
- Remove unused method Sisimai::Rhost->list #396
- Implement Sisimai::Rhost::Cox for parsing bounce mails returned from Cox: https://cox.com/. Thanks to @meir-w #398

v4.25.7

release: "Wed, 25 Apr 2020 22:22:22 +0900 (JST)"
version: "4.25.7"
changes:
- #391 Make required minimum Perl version clear: v5.10.1 or later
- Fix bug around state, constant only in Perl 5.10.0. Thanks to CPAN Testers:
  - www.cpantesters.org/cpan/report/45cc37b2-848e-11ea-8c85-8657451fef07
  - www.cpantesters.org/cpan/report/7a121fac-8590-11ea-9066-e374b0ba08e8

v4.25.6

release: "Wed, 22 Apr 2020 16:22:22 +0900 (JST)"
version: "4.25.6"
changes:
- #367 Fix a little spelling errors. Thanks to @guimard
- #368 Make Sisimai::Message 33% faster
  - Use the negative look-ahead regular expression code for converting all of the email header strings into key-value pairs as a HASH at newly implemented method Sisiai::Message->makemap #366. Thanks to @xtetsuji
  - Remove Sisimai::Message->takeapart (replaced with makemap)
  - Remove Sisimai::Message->headers (replaced with makemap)
  - Code improvement for require statement before method calls #371
- Make Sisimai::Order 12% faster
  - Rewrite Sisimai::Order->make
  - Remove Sisimai::Order->by
  - Remove Sisimai::Order->headers
  - Remove Sisimai::Lhost->headerlist
  - And all headerlist() methods have been removed from Sisimai::Lhost::*, Sisimai::RFC3834 and Sisimai::ARF
  - The MTA module to be loaded at first is decided by the first 2 words of each bounce mail sub- ject, is defined at $Subject in Sisimai::Order
  - Some variables are replaced with state
- Each field parameter has been removed from the following methods because Sisimai detect all the email header fields by Sisimai::Message->makemap() without having to specify field names at field parameter
  - Sisimai->make
  - Sisimai::Message->new
  - Sisimai::Message->make
- Code improvement for require statement before calling match method of some modules defined in $PreMatches at Sisimai::Reason::UserUnknown
- #369 Remove the following unused methods:
  - Sisimai::MIME->patterns
  - Sisimai::SMTP->command
- Some file global variables have been replaced with state #371
- Performance improvement: 12% faster, reduced 6% of method calls
- Sisimai::Lhost::Google has been renamed to Sisimai::Lhost::Gmail #377
- Implement 4 MTA modules: #373 #376
  - Sisimai::Lhost::Barracuda
  - Sisimai::Lhost::PowerMTA
  - Sisimai::Lhost::X6
  - Sisimai::Lhost::GoogleGroups
- email- prefix of each sample email in set-of-emails/maildir directory has been replaced with lhost- sisimai/set-of-emails#14
- SMTP Agent improvement #362
  - Remove Email:: prefix from the value of smtpagent at parsed results
  - Remove Sisimai::Lhost->smtpagent method
- Improved the following MTA modules:
  - Sisimai::Lhost::Amavis #380
  - Sisimai::Lhost::InterScanMSS
  - Sisimai::Lhost::Office365 improvement for reading MIME-encoded subject
  - Sisimai::Lhost::Exchange2007 supports error messages in it-CH
- Tiny bug fix for Subject header decoding
- Fix bug in code for getting an "addresser" address from From: field in the original message part which are multiple lines at Sisimai::ARF. #385 Thanks to @jcbf
- #383 New accessor origin at Sisimai::Data and the parsed results for keeping a path to the source email
- #384 Sisimai::Mail improvement for compatibilities with the Go language version of Sisimai which will be released this summer #389
  - Removed Sisimai::Mail::STDIN->name (not used)
  - Removed Sisimai::Mail::Maildir->inodes (not needed to check the inode)
  - Warning message is displayed when the following methods are called:
    - Sisimai::Mail->close (automatically closes at the EOF)
    - Sisimai::Mail->type (use Sisimai::Mail->kind instead)
    - Sisimai::Mail->mail->* (use Sisimai::Mail->data->* instead)
    - Methods above will be removed at v4.25.10
  - Sisimai::Mail::Memory->data renamed to Sisimai::Mail::Memory->payload
  - Sisimai::Mail::Maildir->size keeps the number of files in the Maildir/
  - Sisimai::Mail::Maildir->offset keeps the number of email files in the Maildir/ which have been read
  - Call Sisimai::Mail::*->read directly instead of Sisimai::Mail->read
- Remove Sisimai::Lhost::UserDefined (not used)
- #387 Add the following D.S.N. codes and error messages (not tested)
  - Thanks to @jcbf
  - Mailbox does not exist! at Sisimai::Reason::UserUnknown (Amazon SES)
  - Not a valid recipienet at Sisimai::Reason::UserUnknown (Yahoo!)
  - Envelope blocked at Sisimai::Reason::Rejected (Minecast.com)
  - 5.2.122 is toomanyconn, 5.4.11 is contenterror, 5.7.51 is blocked at Sisimai::Rhost:: ExchangeOnline

v4.25.5

release: "Wed, 22 Jan 2020 14:44:44 +0900 (JST)"
version: "4.25.5"
changes:
- JSON READING AS AN INPUT SOURCE AND JSON PARSING AS A BOUNCE OBJECT ARE NO LONGER PROVIDED AS OF v4.25.5
- The following obsoleted classes and modules have been removed #356 #359
  - Sisimai::Message::Email
  - Sisimai::Message::JSON
  - Sisimai::Order::Email
  - Sisimai::Order::JSON
  - Sisimai::Bite::Email
  - Sisimai::Bite::JSON
- #344 Add POD section into 2 obsoleted modules: Sisimai::Bite::Email and Sisimai::Bite::JSON Thanks to @guimard
- #343 Fix little spelling error at Sisimai::Order. Thanks to @guimard
- #342 Fix parser code to get an error message which is not beginning with # character at Sisimai::Lhost::Exchange2007. Thanks to @aderumier
- #347 Support case insensitive error code at Sisimai::Rhost::FrancePTT. Thanks to @aderumier
- #348 Code improvement at Sisimai::Lhost::EinsUndEins for detecting error messages and setting the value of rhost.
- Code improvements at Sisimai::Lhost::Postfix to parse an email which have neither delivery reports nor error messages. Thanks to @aderumier
- Code improvements at Sisimai::RFC3834 to parse a vacation message replied automatically from iCloud. Thanks to @aderumier at #346
- Many Pull-Requests and sample emails for French ESPs. Thanks to @aderumier
  - Add 4 error code values at Sisimai::Rhost::FrancePTT #349 #353 #357
    - 102 = blocked
    - 426 = suspend
    - 505 = systemerror
    - 999 = blocked
  - Add 7 sample emails at set-of-emails/ directory: rhost-franceptt-04, 05, 06, 07, 08, 10, and 11 for Sisimai::Rhost::FrancePTT #353 #357
  - Add many error codes and error messages from Orange and La Poste
- Code improvement at Sisimai::Lhost::Postfix for setting HELO to the value of smtpcommand in the parsed results. #350
- Tiny improvement around accessors and variables
- Large scale code improvement at each modules in Sisimai::Lhost
- reduce the number of lines in code about 12%

v4.25.4

release: "Tue, 3 Dec 2019 12:22:22 +0900 (JST)"
version: "4.25.4"
changes:
- #332 THE ABILITY TO READ JSON STRING AS AN INPUT SOURCE AND TO PARSE JSON FORMATTED BOUNCE MESSAGE WILL NOT BE SUPPORTED AT Sisimai 4.25.5
- The following modules for reading json string as an input source, and for parsing json for- matted bounce message will be removed at Sisimai 4.25.5
  - Sisimai::Message::JSON
  - Sisimai::Bite::JSON
  - Sisimai::Bite::JSON::AmazonSES
  - Sisimai::Bite::JSON::SendGrid
  - Sisimai::Order::JSON
- Implement a new MTA module class Sisimai::Lhost, it is a parent class of all the MTA modules for a bounce mail returned as an email message via SMTP and THE FOLLOWING NAME SPACES WERE MARKED AS OBSOLETED OR REMOVED #333
  - Sisimai::Bite: Use Sisimai::Lhost instead
  - Sisimai::Bite::Email: Merged into Sisimai::Lhost
  - Sisimai::Bite::Email::*: Moved under Sisimai::Lhost as the same named MTA module
- The following modules were marked as obsoleted, will be removed and merged into each parent class
  - Sisimai::Message::Email
  - Sisimai::Order::Email
- USAGE AND PARAMETERS FOR THE FOLLOWING METHODS HAVE NOT BEEN CHANGED AT ALL AND WILL NOT BE CHANGED AFTER Sisimai 4.25.5
  - Sisimai->make
  - Sisimai->dump
  - Sisimai::Message->new
- Implement Sisimai::Rhost::IUA for SMTP error codes at https://www.i.ua/.
- Update error message pattern for ClamSMTP at "virusdetected" reason.
- Do not use utf8 flag
- Multibyte characters in the original subject header will not be removed and replaced with "MUL- TIBYTE CHARACTERS HAS BEEN REMOVED"
- Error message ... had no relevant answers. from GSuite is classified into networkerror.

v4.25.3

release: "Sat, 7 Sep 2019 15:00:02 +0900 (JST)"
version: "4.25.3"
changes:
- Fix code for getting a recipient address from the original message part at Sisimai::ARF #325
- #326 Fix code for getting a recipient address and a subject string from the original messaage part at Sisimai::Bite::Email::MailMarshalSMTP
- Fix code to delete unused multipart headers at Sisimai::MIME->breaksup()
- Fix spell in a key name of hash for storing a recipient adress and regular expression for get- ting a recipient address at Sisimai::RFC3464
- #328 Fix code for getting a recipient address and an expanded address from Final-Recipient: and Original-Recipient: field at Sisimai::RFC3464
- Update code for matching error message "The user you are trying to contact is receiving mail at a rate that prevents additional messages from being delivered." at Sisimai::Rhost::GoogleApps
- Update error message pattern for "blocked" reason from GMX: "ESMTP Service not available No SMTP service Bad DNS PTR resource record."
- Update error message pattern for "suspend" reason responded from i.ua MTA: "550 Mailbox is fro- zen."
- Remove the following Perl versions from .travis.yml so Travis CI no longer support old Perls:
  - 5.10
  - 5.16

v4.25.2

release: "Thu, 1 Aug 2019 20:00:00 +0900 (JST)"
version: "4.25.2"
changes:
- #323 Fix two serious bugs:
  - MIME decoding code in Sisimai::MIME
  - Code to capture a recipient address in Sisimai::Bite::Email::IMailServer
- Strictly checks the number of parsed emails in make test

v4.25.1

release: "Tue, 23 Jul 2019 10:00:00 +0900 (JST)"
version: "4.25.1"
changes:
- #310 Bug fix in Sisimai::Rhost::GoogleApps. Thanks to @beeing.
- Check the format of the value of Message-Id header for detecting a bounce mail from Exim or not.
- Call Sisimai::Rhost::FrancePTT module when the value of rhost includes .wanadoo.fr.
- #312 Add an error message: This mailbox is disabled from yahoo.com into Sisimai::Reason:: Suspend. Thanks to @beeing.
- #315 Fix code at Sisimai::Message::Email->takeapart() to decode Subject header of the orig- inal message.
- #316 Update error messages for Low Reputation Error from Gmail.
- Fix code for checking rhost value at Sisimai::Rhost.
- Parser code to read bounce mails from m-FILTER at Sisimai::Message::Email has been improved. Thanks to Nomura Research Institute, Ltd.
- Status 5.4.1 from Exchange Online is classified into "rejected" reason.
- Callback method specified at Sisimai::Message->new with hook is called just before calling scan() method of each Sisimai::Bite::Email module.
- Code improvement in Sisimai::Bite::Email::Sendmail for getting error messages returned from Google.
- Sisimai works on Perl 5.30.

v4.25.0

release: "Tue, 9 Apr 2019 10:22:22 +0900 (JST)"
version: "4.25.0"
changes:
- Implement new class Sisimai::RFC1894 for parsing message/delivery-status part. #298
- Experimental implementation at the following MTA, Rhost modules:
  - Sisimai::Bite::Email::Amavis: amavisd-new
  - Sisimai::Rhost::TencentQQ: Tencent QQ (mail.qq.com)
- Sisimai works with JSON 4.00
- Remove unused methods and variables
  - Sisimai::DateTime->hourname
  - $Sisimai::DateTime::HourNames
  - Sisimai::RFC5322->is_domainpart
  - Sisimai::Address->is_undisclosed
- Code refactoring: less lines of code and shallower indentation.
- Fix bug in Sisimai::ARF to resolve issue #304. Thanks to @lewa.
- Remove set-of-emails/logo directory because we cannot change the license of each file in the directory to The 2-Clause BSD License.
- Update error message patterns in the following modules:
  - Sisimai::Reason::Blocked (hotmail, ntt docomo)
  - Sisimai::Reason::SystemError (hotmail)
  - Sisimai::Reason::TooManyConn (ntt docomo)
  - Sisimai::Reason::UserUnknown (hotmail)
  - Sisimai::Reason::PolicyViolation (postfix)
  - Sisimai::Bite::Email::McAfee (userunknown)
  - Sisimai::Bite::Email::Exchange2007 (securityerror)
- Bug fix in $Sisimai::Message::Email::TryOnFirst: Module name to be loaded is checked before calling push function for avoiding duplication.
- The order of Sisimai::Bite::Email modules to be loaded has been changed: Load Office365 and Outlook prior to Exchange2007 and Exchange2003.
- Update the followng MTA modules for improvements and bug fixes:
  - Sisimai::Bite::Email::Exchange2007
- MIME Decoding in Subject: header improved.
- Bug fix in Sisimai::MIME->is_mimeencoded method.
- Make stable the order of MTA modules which have MTA specific email headers at Sisimai::Order:: Email->headers method.

v4.24.1

release: "Wed, 14 Nov 2018 11:09:44 +0900 (JST)"
version: "4.24.1"
changes:
- Fix bug in Sisimai::RFC3464 module: scan method unintentionally detects non-bounce mail as a bounce #296. Thanks to @whity.
- Remove unused method Sisimai::DateTime->o2d to avoid test failure with Perl 5.16.2 on NetBSD #297. Thanks to Nigel Horne and CPAN Testers.
- Build test with Perl 5.28 on Travis CI.

v4.24.0

release: "Thu, 1 Nov 2018 18:00:00 +0900 (JST)"
version: "4.24.0"
changes:
- Variable improvement (remove redundant substitution)
- Remove Sisimai::RFC2606 (Unused module)
- MIME decoding improvement (Import Pull-Request from sisimai/rb-Sisimai#131)
  - Implement Sisimai::MIME->makeflat
  - Implement Sisimai::MIME->breaksup
  - Call Sisimai::MIME->makeflat() at Sisimai::Message::Email->parse()
  - Other related updates in Sisimai::Bite::Email::*
- Tiny improvement in Sisimai::String->to_plain() method.
- Update "blocked" error message patterns for iCloud.
  - A client IP address has no PTR record
  - Invalid HELO/EHLO name

v4.23.0

release: "Fri, 31 Aug 2018 20:18:35 +0900 (JST)"
version: "4.23.0"
changes:
- #195 Implement Sisimai::Mail::Memory class for reading bounce messages from memory(variable).
- Update regular expression pattern in Sisimai::Bite::Email::Office365 for detecting failure on SMTP RCPT.
- Fix #288, test fails when localtime and gmtime differs. Thanks to @guimard.
- Follow up #289 (issue #288): Some test code have been loosened for UTC+13 (Pacific/Tongatapu), UTC+14 (Pacific/Kiritimati).
- #290 Less function calls: redundant length and require function calls have been removed.
- #291 Fix typo in POD of Sisimai::Data. Thanks to @racke.

v4.22.7

release: "Mon, 16 Jul 2018 13:02:54 +0900 (JST)"
version: "4.22.7"
changes:
- Register D.S.N. 4.4.312 and 5.4.312 on Office 365 as "networkerror".
- Fix error message pattern in Sisimai::Reason::SecurityError.
- Fix code to get the original Message-Id field which continued to the next line. Thanks to Andreas Mock.
- Update error message pattern in Sisimai::Reason::SpamDetected.
- Add 15 sample emails for Postfix, Outlook and others.
- Add 3 sample emails for Sisimai::RFC3464.
- Add 2 sample vacation emails for Sisimai::RFC3834.

v4.22.6

release: "Wed, 23 May 2018 20:00:00 +0900 (JST)"
version: "4.22.6"
changes:
- #271 Most Module::Load::load have been replaced with require.
- #272 Fix bug in Sisimai::MIME->qprintd().
- #273 Error message pattern defined in Sisimai::Reason::Filtered has been replaced with fixed strings.
- #274 Fix many spelling errors in some Pods. Thanks to @guimard.
- #275 Remove sample email files listed in sisimai/set-of-emails#6 to clarify copyrights for libsisimai-perl package on Debian. Thanks to @guimard.
- The value of softbounce in the parsed results is always 1 when a reason is undefined or onhold.
- #278 Less regular expression in each class of Sisimai::Bite::Email.
- #279 Cool logo for "set-of-emails". Thanks to @batarian71.
- #281 Implement Sisimai::Rhost::KDDI for detecting a bounce reason of au via msmx.au.com or lsean.ezweb.ne.jp. Thanks to @kokubumotohiro.
- #282 Update sample emails and codes for getting error messages in a bounced email on Yahoo!.
- Add many sample emails for "notaccept" and "rejected".

v4.22.5

release: "Fri, 30 Mar 2018 12:29:16 +0900 (JST)"
version: "4.22.5"
changes:
- #260 The order for loading MTA modules improvement.
- #261 "make test" now passes on Windows. Thanks to @charsbar.
- Sample emails in set-of-emails/ which are not owned by Sisimai project have been removed.
- Update error message patterns in Sisimai::Reason::Expired.
- Many error message patterns in Sisimai::Reason have been converted to fixed strings #266 #268.
- #267, #269: Use rindex() function instead of index() function.
- #232, #270, Pre-Updates for au.com, the new domain of EZweb announced at their site http://news.kddi.com/kddi/corporate/newsrelease/2017/08/22/2637.html

v4.22.4

release: "Wed, 14 Feb 2018 10:44:00 +0900 (JST)"
version: "4.22.4"
changes:
- Issue #253, Add status code 4.7.25(RFC-7372) as "blocked".
- Pull-Request #254, Remove unused method: Sisimai::Bite::Email->pattern() and the same methods defined in each child class.
- Obsoleted method Sisimai::Address->parse() has been removed.
- The following performance improvements makes 1.34 times faster.
  - Less regular expression #255. Thanks to @xtetsuji.
  - The following Pull-Requests have been imported from rb-Sisimai.
    - sisimai/rb-Sisimai#105
    - sisimai/rb-Sisimai#107
    - sisimai/rb-Sisimai#108
  - Replace $v =~ /\A...\z/ with $v eq '...'
  - Replace $v =~ /\A.../ with index($v, '...') == 0
  - Replace $v =~ /.../ with index($v, '...') > -1
  - Replace $v =~ /.\z/ with substr($v, -1, 1) eq '.'
  - #258 Remove /i modifier from each regular expression as possible and call lc() function before calling Sisimai::Reason::*->match method.
  - Import Pull-Request sisimai/rb-Sisimai#111, Loop improvement.
- #251 Declaration of the version has been changed: use version;

v4.22.3

release: "Tue, 26 Dec 2017 09:22:22 +0900 (JST)"
version: "4.22.3"
changes:
- Merge Pull-Request #238, Fix some typos in POD. Thanks to @brewt.
- Add set-of-emails/json/json-amazonses-06.json as a sample JSON object from sisimai/rb-Sisimai #88.
- Merge #239, Add bounce message patterns in MailboxFull.pm and Blocked.pm for laposte.net and orange.fr. Thanks to @Quickeneen.
- Fix code to avoid warning message "Use of uninitialized value in length" at the following mod- ules on only Perl 5.10.1:
  - Sisimai::Bite::Email::GSuite
  - Sisimai::Message::Email
  - Sisimai::Address
- Merge Pull-Request #244 at issue #243 for following up pull-request #239, more support for Or- ange and La Poste. Thanks to @Quickeneen.
- Merge Pull-Request #245: update error message patterns of SFR and Free.fr.
- Merge Pull-Request #246: error message patterns have been improved on Exim.
- Fix bug in regular expression at Sisimai::Reason::HostUnknown.
- Merge Pull-Request #247, Add 100+ error message patterns into the following reason classes: Blocked, Expired, Filtered, HostUnknown, PolicyViolation, MailboxFull, NetworkError, Rejected, NoRelaying, SpamDetected, SystemError, Suspend, TooManyConn, and UserUnknown.
- Merge Pull-Request #248, code improvement at Sisimai::Data->make method to remove string like 550-5.1.1 from the beginning of each line in an error message for to be matched exactly with regular expression patterns in Sisimai::Reason::*.
- Merge Pull-Request #248, Sisimai::Rhost::ExchangeOnline improved.
- Implement new MTA module: Sisimai::Bite::Email::FML to parse bounce mails generated by fml mailing list server/manager.

v4.22.2

release: "Fri, 13 Oct 2017 11:33:00 +0900 (JST)
version: "4.22.2"
changes:
- Code improvements in Sisimai::Reason::UserUnknown, some MTA modules in Sisimai/Bite/Email
- Support parsing JSON object retrieved from SendGrid Event Webhooks #211.
- Support "event": "spamreport" via Feedback Loop on SendGrid Event Webhooks.
- Implement Sisimai::Address->is_undisclosed method.
- Implement Sisimai::Rhost::GoDaddy to get a correct reason at parsing bounce mails from Go- Daddy (reported at issue #236). Thanks to @ViktorNacht.
- Remove obsoleted classes and methods:
  - Sisimai::MTA
  - Sisimai::MSP
  - Sisimai::CED
  - Sisimai::Address->parse

v4.22.1

release: "Tue, 29 Aug 2017 17:25:22 +0900 (JST)"
version: "4.22.1"
changes:
- Sisimai::Address was born again to resolve issue #227
  - Implement new email address parser method: find()
  - Implement new constructor: make()
  - Implement new writable accessors: lname() and comment()
  - parse() method was marked as obsoleted
- Build test with Perl 5.26 on Travis-CI.

v4.22.0

release: "Tue, 22 Aug 2017 18:25:55 +0900 (JST)"
version: "4.22.0"
changes:
- #215 and Pull-Request #225, bounce reason: "securityerror" has been divided into the following three reasons:
  - securityerror
  - virusdetected
  - policyviolation
- Sisimai now works on Perl 5.26.0
- issue #226 All the MTA modules have been moved to Sisimai::Bite::* and old MTA/MSP modules: Sisimai::MTA, Sisimai::MSP, Sisimai::CED, and all of the methods in these classes have been marked as obsoleted.
- Issue #227 Experimental implementation: Sisimai::Address->find() as born again parser method for email addresses. Thanks to @SteveTheTechie.

v4.21.1

release: "Mon, 29 May 2017 14:22:22 +0900 (JST)"
version: "4.21.1"
changes:
- Improved error message patterns to resolve issue #221, Thanks to @racke.
- Add mta-exim-30.eml as a sample email in set-of-emails/ directory.
- Changes file has been renamed to ChangeLog.md and converted to Markdown format.
- Pull-Request #223, Improved code to detect error messages related to DNS at G Suite.
- Improved code to detect RFC7505 (NullMX) error: sisimai/set-of-emails#4.
- Code improvements for checking and decoding irregular MIME encoded strings at is_mimeencoded and mimedecode methods in Sisimai::MIME class reported from @winebarrel.
- Add unit test codes to test all the changes at sisimai/rb-Sisimai#75.

v4.21.0 - Support G Suite

release: "Mon, 10 Apr 2017 12:17:22 +0900 (JST)"
version: "4.21.0"
changes:
- Experimental implementation: new MTA module Sisimai::MSP::US::GSuite for parsing a bounce mail returned from G Suite. Thanks to @racke at issue #218.
- Improved Sisimai::SMTP::Status->find() method. The method checks whether a found value as D.S.N. is IPv4 address or not.
- Improved code for getting error messages, D.S.N. values, and SMTP reply codes in Sisimai::MTA ::Postfix->scan() method.
- #212 Sisimai->make() and Sisimai::Message->new() methods check the value of a field argu- ment more strictly.
- Fix some typos in method comments: Import pull-request #69 at Ruby version of Sisimai, https://github.com/sisimai/rb-Sisimai/pull/69. Thanks to @koic.
- Issue #217: Fix some macros in Makefile to get cpanm. Thanks to @sgroef.

v4.20.2

release: "Sat, 11 Mar 2017 16:32:48 +0900 (JST)"
version: "4.20.2"
changes:
- #207 Add some error message patterns for a bounce message from Amazon SES SMTP endpoint.
- Register sample email "rfc3834-06.eml" based on an email that is uploaded from @rdeavila at https://github.com/sisimai/rb-Sisimai/issues/65 to test a vacation message.
- Improvements of code for the callback feature: Add a new argument field in Sisimai->make() to pass email header names being captured and referred at Sisimai::Message::Email class.

v4.20.1

release: "Sat, 31 Dec 2016 22:02:22 +0900 (JST)"
version: "4.20.1"
changes:
- Nothing changed. Follow the fixed version of rb-Sisimai(JRuby).

v4.20.0 - Support Bounce Ojbect (JSON)

release: "Sat, 31 Dec 2016 13:36:22 +0900 (JST)"
version: "4.20.0"
changes:
- #199 Experimental implementation: New MTA modules for 2 Cloud Email Deliveries. These modules can parse JSON formatted bounce objects and can convert to Sisimai::Data object.
  - Sisimai::CED::US::AmazonSES
  - Sisimai::CED::US::SendGrid
- Format of the value of smtpagent in the parsed result has been changed. It includes the cate- gory name of MTA/MSP modules like MTA::Sendmail, MTA::Postfix, and MSP::US::SendGrid #200
- #202 The domain part of a dummy email address defined in Sisimai::Address has been changed: dummy-domain.invalid => libsisimai.org.invalid;
- Sisimai::SMTP->is_softbounce() method has been deleted.

v4.19.0 - Callback Feature

release: "Tue, 18 Oct 2016 14:13:22 +0900 (JST)"
version: "4.19.0"
changes:
- Remove utf8 flag from JSON string returned from at Sisimai->dump method.
- Implement a callback feature at Sisimai->make() and Sisimai->dump() methods. More imforma- tion about the feature are available at the following pages:
  - https://libsisimai.org/en/usage#callback
  - https://libsisimai.org/ja/usage#callback
- Implement Sisimai->match() method: issue #173.
- Minor bug fix in Sisimai::MSP::US::AmazonSES->scan() method.

v4.18.1

release: "Sun, 11 Sep 2016 20:05:20 +0900 (JST)"
version: "4.18.1"
changes:
- Fix bug in Sisimai::MIME->qprintd() method reported at issue #192.
- Import sisimai/rb-Sisimai@fb45a47, MIME decoding improvements.
- Issue #194, fix bug in Sisimai::Mail->new called from Sisimai->dump. It didn't work proper- ly when email data read from STDIN.
- Sisimai->dump and Sisimai->make methods die when the number of arguments is neither 1 nor 3
- Implement Sisimai::String->to_plain() for converting from HTML message to plain text before parsing, issue #8.
- Remove Sisimai::String->to_regexp() method, use qr/\Q...\E/ instead.

v4.18.0 - Improvements for Microsoft Exchange Servers

release: "Mon, 22 Aug 2016 20:40:55 +0900 (JST)"
version: "4.18.0"
changes:
- Issue #189, Soft bounce improvement. Thanks to @Quickeneen.
- Pull-Request #190, Sisimai::SMTP->is_softbounce() method has been marked as obsoleted. Use Sisimai::SMTP::Error->soft_or_hard() method instead.
- Issue #185, Sisimai works on Perl 5.24.
- Sisimai::MTA::Exchange has been renamed to Sisimai::MTA::Exchange2003.
- Implement new MTA module Sisimai::MTA::Exchange2007.

v4.17.2

release: "Tue, 26 Jul 2016 21:00:17 +0900 (JST)"
version: "4.17.2"
changes:
- Issue #174, Implement Sisimai::Rhost::ExchangeOnline module to parse a bounce mail from on- premises Exchange 2013 and Office 365.
- The reason of status code: 4.4.5 is systemfull.
- Issue #181, Fixed minor bug on OpenBSD.
- Pull-Request #185: Code improvement at Sisimai::MSP::US::Office365.
- Pull-Request #188: Code improvement at Sisimai::MIME. Thanks to @jonjensen.

v4.17.1

release: "Wed, 30 Mar 2016 14:00:22 +0900 (JST)"
version: "4.17.1"
changes:
- Fixed issue #179 by pull-request #180, a variable in Sisimai/MTA/Exim.pm is not quoted before passing to qr// operator. Thanks to @dzolnierz.

v4.17.0 - New Error Reason "syntaxerror"

release: "Wed, 16 Mar 2016 12:22:44 +0900 (JST)"
version: "4.17.0"
changes:
- Implement new reason syntaxerror. Sisimai will set syntaxerror to the raeson when the value of replycode begins with "50" such as 502, 503, or 504. issue #147.
- Implement description() method at each file in Sisimai/Reason directory at issue #166.
- Implement Sisimai->reason() method for getting the list of reasons Sisimai can detect and its description: issue #168.
- Remove unused method Sisimai::Reason->match(), issue #169.
- Remove unused methods in Sisimai::MSP and Sisimai::MTA, issue #136.
- Remove unused module Sisimai::ISO3166, issue #137.
- Remove unused module Sisimai::RFC5321 and Sisimai::RFC3463, issue #131.
- Some class methods of Sisimai::Address allow the folowing local part as an email address:
  - postmaster
  - mailer-daemon
- Sisimai::RFC5322->is_mailerdaemon method returns 1 when the argument includes postmaster.
- Merge pull-request #172, new method Sisimai::RFC5322->weedout() and code improvements in all the MTA/MSP modules.

v4.16.0 - New Error Reason "delivered"

release: "Thu, 18 Feb 2016 13:49:01 +0900 (JST)"
version: "4.16.0"
changes:
- Implement new reason "delivered". Sisimai set delivered to the reason when the value of Status: field in a bounce message begins with 2. This feature is optional and isn't enabled by default. issue #155.
- Implement new method Sisimai->engine. The method returns the list of MTA and MSP module list implemented in Sisimai.

v4.15.0

release: "Sat, 13 Feb 2016 12:40:15 +0900 (JST)"
version: "4.15.0"
changes:
- Implement new MSP module Sisimai::MSP::US::AmazonWorkMail at pull-request #162. The module parse bounce mails via Amazon WorkMail.
- Implement new MSP module Sisimai::MSP::US::Office365 at pull-request #164. The module parse bounce mails via Microsoft Office 365.
- Tiny code improvements: back port from the Ruby version of Sisimai.

v4.14.2

release: "Wed, 3 Feb 2016 12:26:19 +0900 (JST)"
version: "4.14.2"
changes:
- Issue #154 Fix bug: remove CR(\r) at the end of string in some properties of Sisimai::Data before calling the constructor. Thanks to M Miyamoto.
- Issue #151 fix bug that the value of folded Message-Id: field could not be found at pull-re- quest #157. Thanks to @0xcdcdcdcd.
- Fix bug in Sisimai::MSP::RU::Yandex: getting a pseudo delivery status.
- Implement Sisimai::String->to_regexp() method to fix bug in code to build regular expression reported at pull-request #160, Thanks to @negachov.
- Improved message pattern of Sisimai::Reason::SpamDetected.
- Issue #158, bug fix for substituting the value of lhost and rhost.

v4.14.1 - Sample Emails Moved To "set-of-emails" Repository

release: "Sat, 26 Dec 2015 20:00:00 +0900 (JST)"
version: "4.14.1"
changes:
- eg/ directory has been renamed and sample email files have been moved to the project repository https://github.com/sisimai/set-of-emails, issue #153.

v4.14.0

release: "Fri, 25 Dec 2015 11:04:14 +0900 (JST)"
version: "4.14.0"
changes:
- Repository URL was changed to https://github.com/sisimai/p5-Sisimai
- Sisimai::MTA->SMTPCOMMAND() method has been obsoleted from this version. Use Sisimai::SMTP-> command() instead, issue #136.
- Sisimai::MTA->LONGFIELDS() and Sisimai::MTA->RFC822HEADERS() are obsoleted. Use Sisimai:: RFC5322->LONGFIELDS() and Sisimai::RFC5322->HEADERFIELDS() instead.
- Change internal method names of Sisimai::Message
  - rewrite() begins parse()
  - resolve() begins make()
- #110, #122 Code for reading email files in a directory is improved and got faster than before: merged Pull-Request #123.
- Fixed bug reported at issue #124: warning message: use of uninitialized value in substr at is displayed when Sisimai::Message->resolve() method parses an UNIX mbox which begins from blank line.
- Merged Pull-Request #125, filehandle will not be closed until EOF of each UNIX mbox in Sisimai ::Mail::Mbox->read() method.
- Merged Pull-Request #126, replace while( <$f> ) with do {...} block for reading each email file in a directory at Sisimai::Mail::Maildir->read() method.
- Merged Pull-Request #132, Resolve issue #127: Sisimai cannot parse a mail which message body is MIME encoded. Thanks to @mrwushu.
- Issue #134, Sisimai::RFC3463 and Sisimai::RFC5321 have been obsoleted but are not removed. Use Sisimai::SMTP::Status, Sisimai::SMTP::Reply instead.
- Merged Pull-Request #138, some code blocks in Sisimai::Message->resolve() have been divided into some methods.
- Fixed bug at issue #142, Sisimai can not parse an email that TAB or Space character exists at the end of each line. Thanks to M Miyamoto.
- Fixed bug at issue #144, support date format like Thursday, Apr 29, ....
- Improved code of Sisimai::MTA::IMailServer for support more error message patterns #143.
- Issue #145 Code improvements: back port from Ruby version of Sisimai.
- Fix bugs in regular expression to detect SMTP command in Sisimai::MTA::X4 and Sisimai::MTA:: qmail modules.

v4.13.1 - Two White Cats

release: "Tue, 17 Nov 2015 14:13:10 +0900 (JST)"
version: "4.13.1"
changes:
- #95, Add some sample emails for Sisimai::MTA::Exim.
- Improved code Sisimai::MTA::Exim to get the reason and the SMTP command from LMTP error mes- sage.
- Improved error message patterns at the following modules:
  - Sisimai::Reason::UserUnknown
  - Sisimai::Reason::Rejected
  - Sisimai::Reason::Blocked
- #96, Improved Sisimai::MTA::Exim for parsing "Frozen message".
- #101, Improved code for getting DSN value in Sisimai::MTA::Exim.
- #107, Improved slow regular expression in Sisimai::MSP::JP::EZweb.
- #114 (MTA Order Optimization) issue #116 (Performance tunings), and #118 (Regular expression across the MTA modules) are merged. These improvements that were taught from two white cats in my dream on Nov. 7, and have made Sisimai 1.15 times faster. Thanks to sensible white cats.

v4.13.0 - To Be Semantic Versioning

release: "Thu, 5 Nov 2015 16:11:12 +0900 (JST)"
version: "4.13.0"
changes:
- #85, Use Semantic Versioning from this release. New version number is v4.13.0 <= v4.1.30.
- #84, Experimental implementation: New module Sisimai::MTA::X5 and added a sample email x5-01. eml for the module. Thanks to Masayoshi.M .
- Issue #86, Removed unused version() method from the following modules: Sisimai::RFC3464, Sisimai::RFC3834, Sisimai::ARF, Sisimai::MTA::*, and Sisimai::MSP::*::*.
- Issue #88, #89: fixed Sisimai::MTA::Notes and added notes-04.eml.
- Issue #90, #91: fixed code around Sisimai::Data->alias().
- Improved codes of Sisimai::MTA::*, Sisimai::MSP::*, Sisimai::RFC3464 and Sisimai::ARF as a precaution against serious bug reported on #89.
- Improved codes and serious bug fix for #89 have made Sisimai 1.10 times faster than before.
- #92, All the methods have YARD format comment.
- #93, #94: Fixed bug and improved code for getting alias address and setting the error reason in Sisimai::MTA::Exim module.

v4.1.29

release: "Tue, 6 Oct 2015 10:55:00 +0900 (JST)"
version: "4.1.29"
changes:
- Issue #83, New MTA module implemented as Sisimai::MSP::US::ReceivingSES. This module parse bounce mails from Amazon SES(Receiving).
- Improved code for getting and setting the value of Status: field.
- Improved document in Sisimai::Data and Sisimai::Reason, imported from the sisimai web site.
- Added new sample email rfc3834-03.eml to test code for Sisimai::RFC3834.
- Added new sample emails: sendmail-26,27,28,29,30,31,32.eml.

v4.1.28 - HAPPY 1ST BIRTHDAY

release: "Sun, 16 Aug 2015 14:50:20 +0900 (JST)"
version: "4.1.28"
changes:
- Happy 1st Birthday To Sisimai !!
- Experimental implementation about issue #76: New module Sisimai::RF3834 is for detecting auto replied message and decides a reason as vacation.
- Fixed bug in Sisimai::Message for setting the order of MTA, MSP modules.
- Issue #70, Implemented code for using user defined MTA module and added Sisimai::MTA::UserDe- fined as a sample.
- Issue #78, Implement new accessor ->softbounce in Sisimai::Data object.

v4.1.27 - Sisimai->dump() Method

release: "Fri, 17 Jul 2015 11:45:05 +0900 (JST)"
version: "4.1.27"
changes:
- New method implemented: Sisimai->dump('/path/to/mbox') return parsed data as JSON string.
- Updated error message patterns in the following classes:
  - Sisimai::Reason::NoRelaying
  - Sisimai::Reason::TooManyConn
  - Sisimai::Reason::Blocked
- Fixed code in Sisimai::Reason::MesgTooBig. Error reason of bounce message that the value of Status field is 5.2.3 will be set as exceedlimit.
- Fixed code to get the value of Message-Id header in the original message at Sisimai::Data class.
- Sisimai reports the bounce reason as onhold when Sisimail::Reason->get method did not de- cide the reason and the value of diagnosticcode is not empty.
- Issue #74 is that reported at CPAN Testers Report might be fixed.
- Issue #75, Improved code for parsing 2-digit year value in a Date: field at Sisimai::DateTime class.
- The following test codes for MTA modules: Sisimai::MTA, Sisimai::MSP, Sisimai::ARF, and Sisimai::RFC3464 have been integrated and improved.

v4.1.26 - New Error Reason "toomanyconn"`

release: "Sat, 4 Jul 2015 11:34:44 +0900 (JST)"
version: "4.1.26"
changes:
- Module name changed from Sisimai::Reason::RelayingDenied to "NoRelaying".
- Registered new error reason "TooManyConn". This reason is bounced due to that too many connec- tions or exceeded connection rate limit.
- Included many error messages listed in SendGrid "Deliverability Center": "https://sendgrid.com/ deliverabilitycenter/" as a regular expression at Sisimai::Reason::*. Thanks to Bogdan B. and SendGrid.
- Experimental implementation: Sisimai::Reason->match() is for detecting a bounce reason from given text as an error message.
- Experimental impelmentation about issue #61:New MTA module implemented as Sisimai::MTA::Apache James. The module is for parsing bounce emails which are generated by Apache James/Java Apache Mail Enterprise Server. Thanks to John Aldrich Quan.
- Issue #72, Support SMTP reply code in Sisimai::Data object.
- Fixed code: Add "SystemFull" reason into Sisimai::Reason->anotherone().
- Improved regular expression in Sisimai::MSP::US::Google.

v4.1.25 - Reason Name "nospam" Changed To "spamdetected"

release: "Mon, 22 Jun 2015 11:45:29 +0900 (JST)"
version: "4.1.25"
changes:
- Reason name has been changed from "NoSpam" to "SpamDetected".
- Package name has been changed from Sisimai::Time to Sisimai::DateTime.
- Implemnet Sisimai::Time again as a child class of Time::Piece.
- The class of "timestamp" is now Sisimai::Time in Sisimai::Data object.
- Implement Sisimai::Reason::HasMoved.
- 2 emails bounced due to "expired" reason have been added as a sample for issue #50.
- Fix bug in Sisimai::MTA::MailMarshalSMTP for a bounce mail which have no boundary strings.
- Fix bug in Sisimai::MTA::Exim for setting an error reason decided by SMTP MAIL command.
- Improved regular expression in Sisimai::RFC3464.
- Update Sisimai::MDA, add an error message pattern defined in dovecot 1.2, dovecot/src/plugins /quota/quota.c.
- Update message patterns at SpamDetected, SystemError, Filtered, RelayingDenied, NetworkError, MesgTooBig, MailboxFull, SecurityError, UserUnknown, Blocked and Suspend.
- Fix code for detecting MIME encoded string in Sisimai::MIME.
- Implement TO_JSON method in Sisimai::Address for JSON module.
- Add test code for sample emails in CRLF.
- Add sample emails which is an IDN email.
- Add sample emails which could not be parsed yet into eg/cannot-parse-yet/ directory and imple- ment test code.
- Add sample emails which reason is undefined into eg/reason-is-undefined directory and imple- ment test code.

v4.1.24

release: "Mon, 11 Jun 2015 22:20:59 +0900 (JST)"
version: "4.1.24"
changes:
- Improved fallback code in Sisimai::RFC3464.
- Add message patterns at NoSpam and HostUnknown in Sisimai/Reason.

v4.1.23

release: "Thu, 11 Jun 2015 13:20:59 +0900 (JST)"
version: "4.1.23"
changes:
- Sisimai works on Perl 5.22.0.
- New MTA module Sisimai::MTA::X4 for qmail clone MTAs.
- Performance tuning, Sisimai is now 1.39 times faster than before.
- Improved code in Sisimai/Message.pm: 1.62 times faster than before.
- Bug fix in Sisimai::MSP::JP::EZweb and Sisimai::MSP::JP::KDDI.
- Support "2015-04-29 01:23:45" date format in Sisimai::Time.
- Support the value of Diagnostic-Code without the value of diagnostic-type field in Sisimai ::RFC3464.
- Emails in https://github.com/sendgrid/go-gmime/tree/master/gmime/fixtures and some emails have been added as a sample in eg/ directory.
- Add message patterns at NoSpam, MailboxFull, RelayingDenied, UserUnknown, Blocked, Filtered, SecurityError, Expired, HostUnknown, and NetworkError in Sisimai/Reason directory.
- Fix bug in Sisimai::Data for calling Sisimai::Time->parse() method.
- Sisimai::MTA::IMailServer and Sisimai::MTA::InterScanMSS updated.
- Implement fallback code in Sisimai::RFC3464: parse entire message body to get a recipient ad- dress and error messages. The value of smtpagent parsed by this code is RFC3464::Fallback.

v4.1.22

release: "Thu, 28 May 2015 14:20:59 +0900 (JST)"
version: "4.1.22"
changes:
- Merged pull request #59: Support for Microsoft custom ARF format. Thanks to @jleroy.
- Issue #60: Add Time::Piece and Module::Load to ./cpanfile. Thanks to @kkdYodoKazahaya
- Update Sisimai::ARF for parsing Amazon SES Complaints bounces.

v4.1.21

release: "Tue, 21 Apr 2015 14:20:59 +0900 (JST)"
version: "4.1.21"
changes:
- Update regular expressions of each error message pattern at Sisimai/Reason direcotry: NoSpam, Suspend, Blocked, UserUnknown, Expired, NetworkError, MailboxFull and MesgTooBig.
- Fix bug for setting the value of SMTP command at Sisimai::Data.
- Update regular expression of "expired" in Sisimai::MTA::Exim.
- Add three sample emails for make test in eg/ directory.

v4.1.20

release: "Thu, 9 Apr 2015 14:20:59 +0900 (JST)"
version: "4.1.20"
changes:
- Update regular expressions of each error message pattern at SystemError.pm, MesgTooBig.pm and NoSpam.pm in Sisimai/Reason.
- Add two sample emails for make test in eg/ directory.

v4.1.19 - New Error Reason "nospam"

release: "Mon, 6 Apr 2015 14:20:59 +0900 (JST)"
version: "4.1.19"
changes:
- Update regular expressions of each error message pattern at Rejected.pm, Mailboxfull.pm, MesgTooBig.pm, and UserUnknown.pm in Sisimai/Reason.
- New error reason "nospam" implemented.
- Some message patterns have moved from Sisimai::Reason::SecurityError to Sisimai::Reason:: NoSpam module.

v4.1.18 - New Repository Name "p5-Sisimai"

release: "Fri, 27 Mar 2015 12:59:07 +0900 (JST)"
version: "4.1.18"
changes:
- Repository name on github has been changed to p5-Sisimai.
- Fixed code around regular expressions of "mailboxfull" and "expired" in MTA modules: Sisimai:: MTA::qmail and Sisimai::MTA::Exim. Thanks to @m-walk at issue #57.
- Update regular expressions of error message pattern at SecurityError.pm and Blocked.pm in Sisimai/Reason.

v4.1.17

release: "Mon, 2 Mar 2015 16:01:20 +0900 (JST)"
version: "4.1.17"
changes:
- Improved regular expressions of networkerror, expired and related code in Sisimai::MTA::qmail Thanks to @m-walk at issue #56.

v4.1.16

release: "Wed, 18 Feb 2015 16:01:20 +0900 (JST)"
version: "4.1.16"
changes:
- Add bounce emails as a sample from Postfix 3.0.0.
- Improved code for reading mail data from STDIN at Sisimai::Mail.
- Try to load YAML::Syck module instead of YAML module when string "yaml" is specified in the argument of Sisimai::Data->dump() method.

v4.1.15

release: "Wed, 11 Feb 2015 13:59:59 +0900 (JST)"`
version: "4.1.15"
changes:
- Improved code for detecting abuse message "opt-out" in Sisimai::ARF.
- Minor improvements in Sisimai::MTA::Postfix.

v4.1.14 - Accessors Of Sisimai::Mail Changed

release: "Fri, 6 Feb 2015 13:29:59 +0900 (JST)"
version: "4.1.14"
changes:
- Update Sisimai::MSP::US::Outlook for delayed message.
- Implement new module: Sisimai::Mail::STDIN for reading email data from standard-in.
- Changed accessor names in Sisimai::Mail::Mbox, Sisimai::Mail::Maildir modules: name to file, files to inodes.
- Accessor path always return the path to a mailbox or path to each mail file in Maildir/ at Sisimai::Mail::Mbox and Sisimai::Mail::Maildir.
- Implement new accessor dir, it returns the path to directory of given argument in Sisimai:: Mail::Mbox and Sisimai::Mail::Maildir.

v4.1.13 - Sisimai::Reason->index

release: "Tue, 27 Jan 2015 15:00:55 +0900 (JST)"
version: "4.1.13"
changes:
- Fixed bug in test code for Sisimai::DATA::YAML. Thanks to CPAN Testers Reports.
- Implement new method Sisimai::Reason->index(), returns the list of bounce reasons.

v4.1.12 - New Error Reason "networkerror"

release: "Sat, 24 Jan 2015 15:00:59 +0900 (JST)"
version: "4.1.12"
changes:
- Update sample code in POD at Sisimai::RFC5322 and test codes (RT#101436, Issue #41, See https://rt.cpan.org/Ticket/Display.html?id=101436). Thanks to Mark Stosberg.
- Changed accessor name: data to path in Sisimai::Mail.
- Space character will be inserted after ":" in Sisimai::Data::JSON.
- Improved regular expression for getting the value of email header at each MTA module.
- Message patterns related to DNS or network error have been moved to new module: Sisimai:: Reason::NetworkError.
- New error reason "networkerror": the value of reason for bounce messages returned due to net- work related errors will be set as the reason.
- Sisimai does not rely on Try::Tiny module from this version.

v4.1.11 - Performance Improvements

release: "Thu, 15 Jan 2015 15:01:59 +0900 (JST)"
version: "4.1.11"
changes:
- Improved code in Sisimai/Mail/Mbox.pm: using substr function instead of a regular expression is 1.46 times faster than before.
- Code improvement in Sisimai/Reason.pm: using grep {} block instead of a regular expression is 133% faster than before.
- Revert commit 0c7782cecafdc923d3c82b81a201a787611654ea for Sisimai::Time.
- Improvement of pattern match in Sisimai/Message.pm is 2.27 times faster.
- Improvement of regular expressions in each MTA module is 115% faster than before.

v4.1.10 - +2 MTA Modules

release: "Mon, 12 Jan 2015 17:59:35 +0900 (JST)"
version: "4.1.10"
changes:
- Implement the following MTA/MSP modules:
  - Sisimai::MSP::UK::MessageLabs (Symantec.cloud: formerly MessageLabs)
  - Sisimai::MSP::US::Bigfoot (bigfoot.com)
- Added 2 sample emails: arf05.eml, arf-06.eml and improved Sisimai::ARF from pull request #37, Thanks to @jcbf.
- Merged pull request #38, Updated Sisimai::US::Facebook and DMARC forensic related codes, and error message patterns in Sisimai::Reason::* modules. Thanks to @jcbf.
- Merged pull request #39, Updated Sisimai::RFC3464 and message patterns in Sisimai::Reason:: SecurityError and Suspended. Thanks to @jcbf.
- Regular expression improvements in each MTA module(issue #40) is between 122% and 800% faster than Sisimai 4.1.9.

v4.1.9 - +3 MTA Modules

release: "Wed, 31 Dec 2014 18:59:22 +0900 (JST)"
version: "4.1.9"
changes:
- Implement the following MTA/MSP modules:
  - Sisimai::MTA::X3 (Unknown MTA(3))
  - Sisimai::MSP::DE::EinsUndEins (1&1)
  - Sisimai::MTA::MailMarshalSMTP (Trustwave Secure Email Gateway: formerly MailMarshal SMTP)
- Improved code for getting error message in a bounce mail from MXLogic.
- Added 4 sample emails from pull request #32, Thanks to @jcbf.
- Added 4 sample emails and updated error message patterns at some files in Sisimai/Reason direc- tory from pull request #34, Thanks to @jcbf.
- Improved code for getting FBL related values in Sisimai::ARF.

v4.1.8 - YAML is Also Supported

release: "Fri, 19 Dec 2014 17:22:59 +0900 (JST)"
version: "4.1.8"
changes:
- Support new data format: YAML(optional, "YAML" module required).

v4.1.7

release: "Thu, 18 Dec 2014 23:59:59 +0900 (JST)"
version: "4.1.7"
changes:
- Tiny code improvement of Sismai::MSP::RU::Yandex.
- Improved code for detecting email bounce from MXLogic.
- Add some message patterns into Sisimai::Reason::Expired.
- Implement the following MTA/MSP modules:
  - Sisimai::MSP::US::Zoho (Zoho Mail)
  - Sisimai::MTA::X2 (Unknown MTA(2))
- Improved code for getting error message in a bounce mail from Zoho Mail.

v4.1.6

release: "Sun, 7 Dec 2014 22:44:36 +0900 (JST)"
version: "4.1.6"
changes:
- Improved code for parsing email bounce from @nokiamail.com.
- Implement Sisimai::MSP::RU::Yandex for email bounces from Yandex.Mail.

v4.1.5

release: "Fri, 5 Dec 2014 18:20:22 +0900 (JST)"
version: "4.1.5"
changes:
- Fix newline of some sample emalis in eg/ directory.

v4.1.4

release: "Thu, 4 Dec 2014 20:40:22 +0900 (JST)"
version: "4.1.4"
changes:
- Improved code for checking bounce mail in Sisimai::MTA::OpenSMTPD.
- Implement the following modules for Email Service Providers:
  - Sisimai::MSP::RU::MailRu (@mail.ru)
  - Sisimai::MSP::DE::GMX (GMX)

v4.1.3 - Add 5 MTA/MSP Modules

release: "Sun, 23 Nov 2014 21:22:55 +0900 (JST)"
version: "4.1.3"
changes:
- Improved code for detecting error reason in Sisimai::Reason module.
- Implement the following MTA/MSP modules:
  - Sisimai::MTA::MessagingServer (Oracle Communications Messaging Server, Sun Java System Mes- saging Server)
  - Sisimai::MTA::X1 (Unknown MTA(1))
  - Sisimai::MSP::US::Yahoo (Yahoo! MAIL)
  - Sisimai::MSP::US::Aol (Aol Mail)
  - Sisimai::MSP::US::Outlook (Outlook.com)

v4.1.2 - Key Name Changed To "timestamp"

release: "Sat, 22 Nov 2014 22:22:22 +0900 (JST)"
version: "4.1.2"
changes:
- Require Time::Local 1.19 or later for fixing issue #21, #23, and #24.
- Key name of time stamp has been changed from date to timestamp.
- Data sources and hash algorithm of token string in parsed data have been changed.
- Implement the following MTA modules:
  - Sisimai::MTA::InterScanMSS (Trend Micro InterScan Messaging Security Suite)
  - Sisimai::MTA::SurfControl (WebSense SurfControl)
  - Sisimai::MTA::V5sendmail (Sendmail v5 and other MTAs based on V5 Sendmail)
- Fixed bounce reason names in Sisimai::RFC3463.

v4.1.1 - Support 6+ Commercial MTAs

release: "Mon, 10 Nov 2014 15:59:03 +0900 (JST)"
version: "4.1.1"
changes:
- Fix tiny bug in Sisimai::MTA::Exim.
- Add many sample emails into eg/ directory.
- Improved code for detecting connection errors at Sendmail and Courier.
- Sisimai::RFC3464 and Sisimai::MTA::Exchange imporved.
- Implement the following MTA/MSP modules for commercial MTAs:
  - Sisimai::MTA::Notes (Lotus Notes)
  - Sisimai::MTA::McAfee
  - Sisimai::MTA::MXLogic (McAfee Product)
  - Sisimai::MTA::MailFoundry
  - Sisimai::MTA::IMailServer (IPSWITCHI IMail Server)
  - Sisimai::MTA::mFILTER (DigitalArts m-FILTER)
  - Sisimai::MTA::Activehunter (TransWARE Active!hunter)
- Improved code for deciding error reason at Sendmail and qmail.

v4.1.0 - Sisimai::Group Removed Permanently

release: "Sat, 4 Oct 2014 15:09:09 +0900 (JST)"
version: "4.1.0"
changes:
- Sisimai::Group::* child classes and provider, category as a property in the parsed data have been removed permanently.
- Fix the newline in sample email files for make test.

v4.0.2 - Support Amazon SES and SendGrid

release: "Wed, 10 Sep 2014 22:45:43 +0900 (JST)"
version: "4.0.2"
changes:
- Implement the following MTA/MSP modules:
  - Sisimai::MSP::US::AmazonSES
  - Sisimai::MSP::US::SendGrid
  - Sisimai::MTA::Domino (IBM Domino)
- Large scale code refactoring at Sisimai::RFC3464.

v4.0.1

release: "Sun, 17 Aug 2014 23:00:00 +0900 (JST)"
version: "4.0.1"
changes:
- Fixed bug for reading each email file in the Maildir given as an argument of Sisimai::Mail:: Maildir->read() method.
- Refactoring around codes to return the parsed data.
- Implement make() method to get bounce data at Sisimai.pm.

v4.0.0 - the first release

release: "Sat, 16 Aug 2014 20:00:00 +0900 (JST)"
version: "4.0.0"
changes:
- The first release of Sisimai.

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