Swift

Verify Connectivity to the POP3 Server

Demonstrates the Chilkat MailMan.VerifyPopConnection method, which tests whether a TCP/IP connection can be established with the configured POP3 server. It verifies connectivity only — it does not authenticate. This example configures the POP3 host and checks whether it can be reached.

Background: This is the POP3 counterpart to VerifySmtpConnection. It answers the first diagnostic question — can the client reach the POP3 server on the configured host and port and complete the TLS handshake? A failure here indicates a network, firewall, DNS, port, or certificate problem rather than a credentials issue, which VerifyPopLogin checks next.

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func chilkatTest() {
    //  Demonstrates the MailMan.VerifyPopConnection method, which tests whether a TCP/IP
    //  connection can be established with the configured POP3 server.  It verifies connectivity
    //  only (it does not authenticate).

    let mailman = CkoMailMan()!

    //  Configure the POP3 server connection.
    mailman.mailHost = "pop.example.com"
    mailman.mailPort = 995
    mailman.popSsl = true

    //  Test connectivity to the POP3 server.
    var connected: Bool = mailman.verifyPopConnection()

    if connected == true {
        print("Successfully connected to the POP3 server.")
    }
    else {
        print("Could not connect to the POP3 server.")
    }


}