SMTP using SOCKS5, SOCKS4 Proxy

Demonstrates how to communicate with an SMTP server via a SOCKS4 or SOCKS5 proxy.

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<?php

//  The mailman object is used for sending and receiving email.
$mailman = new COM("Chilkat.MailMan2");

//  Any string argument automatically begins the 30-day trial.
$success = $mailman->UnlockComponent('30-day trial');
if ($success != true) {
    print 'Component unlock failed' . "\n";
    exit;
}

//  To use a SOCKS4 or SOCKS5 proxy, simply set the following
//  properties prior to making any calls that communicate with
//  an SMTP server:
//  The SOCKS hostname may be a domain name or
//  IP address:
$mailman->SocksHostname = 'www.mysocksproxyserver.com';
$mailman->SocksPort = 1080;
$mailman->SocksUsername = 'myProxyLogin';
$mailman->SocksPassword = 'myProxyPassword';
//  Set the SOCKS version to 4 or 5 based on the version
//  of the SOCKS proxy server:
$mailman->SocksVersion = 5;
//  Note: SOCKS4 servers only support usernames without passwords.
//  SOCKS5 servers support full login/password authentication.

//  Set the SMTP server.
$mailman->SmtpHost = 'smtp.chilkatsoft.com';

//  Set the SMTP login/password (if required)
$mailman->SmtpUsername = 'myUsername';
$mailman->SmtpPassword = 'myPassword';

//  Create a new email object
$email = new COM("Chilkat.Email2");

$email->Subject = 'This is a test';
$email->Body = 'This is a test';
$email->From = 'Chilkat Support <support@chilkatsoft.com>';
$email->AddTo('Chilkat Admin','admin@chilkatsoft.com');

//  Call SendEmail to connect to the SMTP server and send.
//  The connection (i.e. session) to the SMTP server remains
//  open so that subsequent SendEmail calls may use the
//  same connection.
$success = $mailman->SendEmail($email);
if ($success != true) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

//  Some SMTP servers do not actually send the email until
//  the connection is closed.  In these cases, it is necessary to
//  call CloseSmtpConnection for the mail to be  sent.
//  Most SMTP servers send the email immediately, and it is
//  not required to close the connection.  We'll close it here
//  for the example:
$success = $mailman->CloseSmtpConnection();
if ($success != true) {
    print 'Connection to SMTP server not closed cleanly.' . "\n";
}

print 'Mail Sent!' . "\n";
?>