Email failed to send out when try to run the test mode in publication

Hi,

I created a new publication and try to use the test mode with dynamics recipients to test the email but the email failed to send out with the an error message (as per attached).

I also checked in Internet to get solution from other post but the solution is not work for me. I had tried to add the destination with my email details in my job server and I had double checked my email password is correct.

Please kindly advise.

Thank you.