Ruby

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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Ruby

require '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(true)

#  Test connectivity to the SMTP server.
connected = mailman.VerifySmtpConnection()

if (connected == true)
    print "Successfully connected to the SMTP server." + "\n";
else
    print "Could not connect to the SMTP server." + "\n";
end