Perl

SMTP Inspection

See more SMTP Examples

Examine an SMTP session to view all communications sent to the SMTP server. Perl

use chilkat();

$success = 0;

$mailman = chilkat::CkMailMan->new();

$mailman->put_SmtpHost("smtp.example.com");
$mailman->put_SmtpUsername("myUsername");
$mailman->put_SmtpPassword("myPassword");

$mailman->put_SmtpPort(465);
$mailman->put_StartTLS(1);

$email = chilkat::CkEmail->new();

$email->put_Subject("This is a test");
$email->put_Body("This is a test");
$email->put_From('Alex <alex@example.com>');
$email->AddTo("Christoph",'christoph@example2.com');
$email->AddBcc("Victor",'victor@example3.com');

# Generate the MIME that is sent when SendEmail is called
$mimeStr = $mailman->renderToMime($email);
print $mimeStr . "\r\n";

$success = $mailman->SendEmail($email);
if ($success == 0) {
    print $mailman->lastErrorText() . "\r\n";
    exit;
}

$success = $mailman->CloseSmtpConnection();
if ($success != 1) {
    print "Connection to SMTP server not closed cleanly." . "\r\n";
}

# Examine the SMTP session log.
print "----" . "\r\n";
print "Smtp Session Log:" . "\r\n";
print $mailman->smtpSessionLog() . "\r\n";

# ---------------------------------------------------
# Sample output:
# ---------------------------------------------------

# MIME-Version: 1.0
# Date: Fri, 06 Mar 2026 16:21:00 -0600
# Message-ID: <A5DC25990C93EC2676F4FBB2BB3BFA9EB34FF9D3@CHILKAT25>
# Content-Type: text/plain; charset=us-ascii; format=flowed
# Content-Transfer-Encoding: 7bit
# X-Priority: 3 (Normal)
# Subject: This is a test
# From: Alex <alex@example.com>
# To: Christoph <christoph@example2.com>
# Bcc: Victor <victor@example3.com>
# 
# This is a test
# ----
# Smtp Session Log:
# 220 smtp.example.com ESMTP Amazon WorkMail SMTP Service
# EHLO MYCOMPUTER<CRLF>
# 250-smtp.example.com
# 250-8BITMIME
# 250-AUTH PLAIN LOGIN
# 250 Ok
# AUTH LOGIN<CRLF>
# 334 VXNlcm5hbWU6
# YWRtaW5AY2hpbGthdHNvZnQuY29t<CRLF>
# 334 UGFzc3dvcmQ6
# {PasswordOrCredentials}
# 235 Authentication successful.
# MAIL FROM:<alex@example.com><CRLF>
# 250 Ok
# RCPT TO:<christoph@example2.com><CRLF>
# 250 Ok
# RCPT TO:<victor@example3.com><CRLF>
# 250 Ok
# DATA<CRLF>
# 354 End data with <CR><LF>.<CR><LF>
# {388 bytes} <--- The MIME source of the email (examined via RenderToMime) was sent here.
# <CRLF>.<CRLF>
# 250 Ok
# QUIT<CRLF>
# 221 Bye