Perl

Use an Existing Socket SSH Tunnel

Demonstrates the Chilkat MailMan.UseSshTunnel method, which configures MailMan to use an existing SSH tunnel provided by a Socket object for its SMTP and POP3 connections. This example opens and authenticates a tunnel on a Socket, hands it to MailMan, and then verifies an SMTP login through it.

Background: Sharing one already-established SSH tunnel across objects avoids opening (and authenticating) a separate SSH connection for every component that needs to reach the remote network. Here the tunnel lives on a Socket object, which MailMan then routes its SMTP/POP3 traffic through. It is the Socket-based sibling of UseSsh, which shares an Ssh object instead.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# Demonstrates the MailMan.UseSshTunnel method, which configures MailMan to use an existing
# SSH tunnel provided by a Socket object for its SMTP and POP3 connections.

# Open and authenticate the SSH tunnel using a Socket object.
my $sshTunnel = Chilkat2::Socket->new;
my $success = $sshTunnel->SshOpenTunnel('ssh.example.com', 22);
if (!$success) {
    print $sshTunnel->LastErrorText, "\n";
    exit;
}

$success = $sshTunnel->SshAuthenticatePw('sshUser', 'sshPassword');
if (!$success) {
    print $sshTunnel->LastErrorText, "\n";
    exit;
}

my $mailman = Chilkat2::MailMan->new;

# Configure the SMTP server connection.  These connections will travel through the tunnel.
$mailman->SmtpHost('smtp.example.com');
$mailman->SmtpPort(465);
$mailman->SmtpSsl(1);
$mailman->SmtpUsername('user@example.com');
$mailman->SmtpPassword('myPassword');

# Tell MailMan to route its connections through the existing tunnel.
$success = $mailman->UseSshTunnel($sshTunnel);
if (!$success) {
    print $mailman->LastErrorText, "\n";
    exit;
}

# SMTP operations now travel through the shared SSH tunnel.
$success = $mailman->VerifySmtpLogin();
if (!$success) {
    print $mailman->LastErrorText, "\n";
    exit;
}

print "Authenticated with the SMTP server through the SSH tunnel.\n";