To install Net::Server::Mail::ESMTP::XFORWARD, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Net::Server::Mail::ESMTP::XFORWARD
CPAN shell
perl -MCPAN -e shell install Net::Server::Mail::ESMTP::XFORWARD
For more information on module installation, please visit the detailed CPAN module installation guide.