We made our own checks.
Sorry, it is not happening.
Do you have Video to solve this problem?
Or which document is on this problem?
I've tried. I made the port 25, it doesn't.
What smtp service and smtp port used on your local smtp server? - No use local smtp server. My smtp server is outside.
Did did allow smtp relay from your local smtp server to PMG? No use local smtp server. My outsite smtp server port is 587.
From your first print screen, you can receive email but cannot send out from pmg?