Perl

Verify Connectivity to the SMTP Server

Demonstrates the Chilkat MailMan.VerifySmtpConnection method, which tests whether a TCP/IP connection can be established with the configured SMTP server. It verifies connectivity only — it does not authenticate. This example configures the SMTP host and checks whether it can be reached.

Background: When a send fails, it helps to know where it broke. VerifySmtpConnection isolates the first hop — can the client even reach the server on the configured host and port, and complete the TLS handshake? A failure here points at networking, firewall, DNS, port, or certificate issues rather than credentials. Once connectivity is confirmed, VerifySmtpLogin tests the authentication step.

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Perl

use chilkat();

#  Demonstrates the MailMan.VerifySmtpConnection method, which tests whether a TCP/IP
#  connection can be established with the configured SMTP server.  It verifies connectivity
#  only (it does not authenticate).

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

#  Configure the SMTP server connection.
$mailman->put_SmtpHost("smtp.example.com");
$mailman->put_SmtpPort(465);
$mailman->put_SmtpSsl(1);

#  Test connectivity to the SMTP server.
$connected = $mailman->VerifySmtpConnection();

if ($connected == 1) {
    print "Successfully connected to the SMTP server." . "\r\n";
}
else {
    print "Could not connect to the SMTP server." . "\r\n";
}