/ 
Net-Server-Mail-0.28
River stage two • 9 direct dependents • 12 total dependents
/ Net::Server::Mail::SMTP

NAME

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

SYNOPSIS

use Net::Server::Mail::SMTP;

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

my $conn;
while($conn = $server->accept)
{
    my $smtp = Net::Server::Mail::SMTP->new( socket => $conn );
    $smtp->set_callback(RCPT => \&validate_recipient);
    $smtp->set_callback(DATA => \&queue_message);
    $smtp->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 SMTP (RFC 821) protocol. Notice that it don't implement the extension mechanism introduce in RFC 2821. You have to use Net::Server::Mail::ESMTP if you want this capability.

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

METHODS

SMTP specific methods.

get_sender

Returns the sender of the current session. Return undefined if the reverse path step is not complete.

get_recipients

Returns the list of recipients supplied by client. Returns undef if forward_path step is not engaged. Returns an empty list if not recipients succeed.

EVENTS

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

HELO

Takes the hostname given as argument. Engage the reverse path step on success.

sub helo_handle
{
    my($session, $hostname) = @_;

    if($hostname eq 'localhost')
    {
        return(0, 553, q(I don't like this hostname, try again.));
    }

    # don't forgot to return a success reply if you are happy with
    # command's value
    return 1;
}

NOOP

This handler takes no argument

EXPN

Command not yet implemented.

Handler takes address as argument.

EXPN

Command not implemented, deprecated by RFC 2821

Handler takes no argument.

VRFY

Command not yet implemented.

Handler takes address as argument.

HELP

Command not yet implemented.

Handler takes a command name as argument.

MAIL

Handler takes address as argument. On success, engage the forward path step and keep the given address for later use (get it with get_sender() method).

RCPT

Handler takes address as argument. On success, engage the mail data path step and push the given address into the recipient list for later use (get it with get_recipients() method).

SEND

Command not implemented.

Handler takes no argument.

SOML

Command not implemented.

Handler takes no argument.

SAML

Command not implemented.

Handler takes no argument.

DATA

This handler is called after the final . sent by client. It takes data as argument in a scalar reference. You should queue the message and reply with the queue ID.

DATA-INIT

This handler is called before enter in the "waiting for data" step. The default success reply is a 354 code telling the client to send the mail content.

DATA-PART

This handler is called at each parts of mail content sent. It takes as argument a scalar reference to the part of data received. It is deprecated to change the contents of this scalar.

RSET

Handler takes no argument.

On success, all step are initialized and sender/recipients list are flushed.

QUIT

Handler takes no argument.

Connection is closed after this command. This behavior may change in future, you will probably be able to control the closing of connection.

SEE ALSO

Please, see Net::Server::Mail, Net::Server::Mail::ESMTP 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