How to verify that the mail server is alive with Java?

Question

Is there a way with the JavaMail API to verify that the mail server is being used? If not, how to do it with Java code?

Thanks for the help for the help.

Answer 1

If you have a reference to an instance of Session , you can do the following:

Session s = //a JavaMail session I got from somewhere boolean isConnected = s.getTransport("smtp").isConnected(); 

If the mail client is connected to the corresponding SMTP server, it usually means that it is alive.

Answer 2

From the JavaMail API, you can try sending an email and see if it was sent successfully.

From a connection point of view, you can just ping it:

  InetAddress host = InetAddress.getByName("mailserver"); System.out.println("host.isReachable(1000) = " + host.isReachable(1000));