Java

Explicitly Connect to the SMTP Server

Demonstrates the Chilkat MailMan.SmtpConnect method, which explicitly connects to the SMTP server. If SSL/TLS is required by the current property settings, the secure TLS channel is established as part of connecting. This example opens the connection.

Background: SmtpConnect performs just the connect (and TLS handshake) step, without authenticating — useful when you want fine-grained control over the connection lifecycle, or to separate connecting from authenticating (SmtpAuthenticate) for diagnostics. For everyday sending you don't need to call it: SendEmail connects automatically.

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import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.MailMan;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the MailMan.SmtpConnect method, which explicitly connects to the SMTP server.
        // If SSL/TLS is required by the current property settings, the secure channel is established
        // as part of connecting.

        MailMan mailman = new MailMan();

        // Configure the SMTP server connection.
        mailman.setSmtpHost("smtp.example.com");
        mailman.setSmtpPort(465);
        mailman.setSmtpSsl(true);

        // Explicitly connect to the SMTP server (does not authenticate).

        try {
            mailman.smtpConnect();
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Connected to the SMTP server.");
    }
}