PHP Extension

Send a Raw SMTP Command

Demonstrates the Chilkat MailMan.SmtpSendRawCommand method, which sends a raw command to the SMTP server and returns the server's response. The second argument specifies the charset to use if the command contains non-US-ASCII characters, and the third indicates whether to base64-encode the command before sending. This example sends a raw NOOP on an open connection.

Background: SMTP is a line-based text protocol (EHLO, MAIL FROM, RCPT TO, DATA, QUIT), so a raw-command hook lets you issue anything Chilkat doesn't wrap — a server extension, or a custom step during a manual auth exchange. The base64 flag exists because some SMTP exchanges (notably AUTH challenge/response) require the argument to be base64-encoded on the wire.

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PHP Extension

<?php

include("chilkat.php");

$success = false;

//  Demonstrates the MailMan.SmtpSendRawCommand method, which sends a raw command to the SMTP
//  server and returns the server's response.  The 2nd argument is the charset used if the
//  command contains non-US-ASCII characters, and the 3rd indicates whether to base64-encode
//  the command before sending.

$mailman = new CkMailMan();

//  Configure the SMTP server connection.
$mailman->put_SmtpHost('smtp.example.com');
$mailman->put_SmtpPort(465);
$mailman->put_SmtpSsl(true);
$mailman->put_SmtpUsername('user@example.com');
$mailman->put_SmtpPassword('myPassword');

$success = $mailman->OpenSmtpConnection();
if ($success == false) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

//  Send the raw SMTP NOOP command (not base64-encoded).
$response = $mailman->smtpSendRawCommand('NOOP','us-ascii',false);
if ($mailman->get_LastMethodSuccess() == false) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

print 'NOOP response: ' . $response . "\n";

$success = $mailman->CloseSmtpConnection();
if ($success == false) {
    print $mailman->lastErrorText() . "\n";
    exit;
}


?>