C++

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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#include <CkMailMan.h>

void ChilkatSample(void)
    {
    //  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).

    CkMailMan mailman;

    //  Configure the POP3 server connection.
    mailman.put_MailHost("pop.example.com");
    mailman.put_MailPort(995);
    mailman.put_PopSsl(true);

    //  Test connectivity to the POP3 server.
    bool connected = mailman.VerifyPopConnection();

    if (connected == true) {
        std::cout << "Successfully connected to the POP3 server." << "\r\n";
    }
    else {
        std::cout << "Could not connect to the POP3 server." << "\r\n";
    }
    }