PHP ActiveX

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

$success = 0;

//  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 COM("Chilkat.MailMan");

//  Configure the SMTP server connection.
$mailman->SmtpHost = 'smtp.example.com';
$mailman->SmtpPort = 465;
$mailman->SmtpSsl = 1;
$mailman->SmtpUsername = 'user@example.com';
$mailman->SmtpPassword = 'myPassword';

$success = $mailman->OpenSmtpConnection();
if ($success == 0) {
    print $mailman->LastErrorText . "\n";
    exit;
}

//  Send the raw SMTP NOOP command (not base64-encoded).
$response = $mailman->smtpSendRawCommand('NOOP','us-ascii',0);
if ($mailman->LastMethodSuccess == 0) {
    print $mailman->LastErrorText . "\n";
    exit;
}

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

$success = $mailman->CloseSmtpConnection();
if ($success == 0) {
    print $mailman->LastErrorText . "\n";
    exit;
}


?>