NAME

       Net::Server::Mail::ESMTP - A module to implement the ESMTP protocol

SYNOPSIS

           use Net::Server::Mail::ESMTP;

           my @local_domains = qw(example.com example.org);
           my $server = new IO::Socket::INET Listen => 1, LocalPort => 25;

           my $conn;
           while($conn = $server->accept)
           {
               my $esmtp = new Net::Server::Mail::ESMTP socket => $conn;
               # activate some extensions
               $esmtp->register('Net::Server::Mail::ESMTP::8BITMIME');
               $esmtp->register('Net::Server::Mail::ESMTP::PIPELINING');
               # adding some handlers
               $esmtp->set_callback(RCPT => \&validate_recipient);
               $esmtp->set_callback(DATA => \&queue_message);
               $esmtp->process();
               $conn->close()
           }

           sub validate_recipient
           {
               my($session, $recipient) = @_;

               my $domain;
               if($recipient =~ /@(.*)>\s*$/)
               {
                   $domain = $1;
               }

               if(not defined $domain)
               {
                   return(0, 513, 'Syntax error.');
               }
               elsif(not(grep $domain eq $_, @local_domains))
               {
                   return(0, 554, "$recipient: Recipient address rejected: Relay access denied");
               }

               return(1);
           }

           sub queue_message
           {
               my($session, $data) = @_;

               my $sender = $session->get_sender();
               my @recipients = $session->get_recipients();

               return(0, 554, 'Error: no valid recipients')
                   unless(@recipients);

               my $msgid = add_queue($sender, \@recipients, $data)
                 or return(0);

               return(1, 250, "message queued $msgid");
           }

DESCRIPTION

       This class implement the ESMTP (RFC 2821) protocol.

       This class inherit from Net::Server::Mail::SMTP. Please see Net::Server::Mail::SMTP for
       documentation of common methods.

METHODS

       ESMTP specific methods.

   register
       Activate an ESMTP extension. This method takes a module's name as argument. This module
       must implement certain methods. See Net::Server::Mail::ESMTP::Extension for more details.

EVENTS

       Descriptions of callback who's can be used with set_callback method. All handle takes the
       Net::Server::Mail::ESMTP object as first argument and specific callback's arguments.

   EHLO
       Takes the hostname given as argument. Engage the reverse path step on success. RFC 2821
       requires that EHLO command return the list of supported extension. Default success reply
       implement this, so it is deprecated to override this reply.

       You can rebuild extension list with get_extensions() method.

       Exemple:

           my @extends;
           foreach my $extend ($esmtp->get_extensions())
           {
               push(@extends, join(' ', $extend->keyword(), $extend->parameter()));
           }
           my $extends_string = join("\n", @extends);

SEE ALSO

       Please, see Net::Server::Mail, Net::Server::Mail::SMTP and Net::Server::Mail::LMTP.

AUTHOR

       Olivier Poitrey <rs@rhapsodyk.net>

AVAILABILITY

       Available on CPAN.

       anonymous Git repository:

       git clone git://github.com/rs/net-server-mail.git

       Git repository on the web:

       <https://github.com/rs/net-server-mail>

BUGS

       Please use CPAN system to report a bug (http://rt.cpan.org/).

LICENCE

       This library is free software; you can redistribute it and/or modify it under the terms of
       the GNU Lesser General Public License as published by the Free Software Foundation; either
       version 2.1 of the License, or (at your option) any later version.

       This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU Lesser General Public License for more details.

       You should have received a copy of the GNU Lesser General Public License along with this
       library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
       Boston, MA 02111-1307 USA

COPYRIGHT

       Copyright (C) 2002 - Olivier Poitrey, 2007 - Xavier Guimard