To install Qpsmtpd::Plugin::Queue::HTTPRequest, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Qpsmtpd::Plugin::Queue::HTTPRequest
CPAN shell
perl -MCPAN -e shell
install Qpsmtpd::Plugin::Queue::HTTPRequest
For more information on module installation, please visit the detailed CPAN module installation guide.