Node.js

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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Node.js

NODEJS_PRELUDE

function chilkatExample() {

    //  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).

    var mailman = new chilkat.MailMan();

    //  Configure the SMTP server connection.
    mailman.SmtpHost = "smtp.example.com";
    mailman.SmtpPort = 465;
    mailman.SmtpSsl = true;

    //  Test connectivity to the SMTP server.
    var connected = mailman.VerifySmtpConnection();

    if (connected == true) {
        console.log("Successfully connected to the SMTP server.");
    }
    else {
        console.log("Could not connect to the SMTP server.");
    }


}

chilkatExample();