The error message we are getting is, “No outbound route between this site and the Internet on Port 25.”
BUT we checked with our ISP and they stated that are port 25 is OPEN.
You checked with a human? Then the human lied. The test is quite simple.
So this plugin first detected, and second reported a firewall problem to you? Possibly saving you hours of effort “barking up the wrong tree”, and you decided that knowledge/functionality was worth only one star?
Odd.
iChristianYellowPages, do not spend your time. I got the same rude answer, maybe worst. The plugin cannot be well built with this kind of developer.