[OPLINTECH] SMTP Checker

[Mindy Holmes]

I am trying to do some testing on a mail server and would like to find a good free SMTP checker with verbose reporting to help me isolate some issues that happening.  Since we received a new firewall, I have a good hunch something is not whitelisted that should be or something is not open that should be.  I can Google and find a bunch of results, but was hoping someone could recommend one that they have used that they felt was safe - free is best.

Thanks,
Mindy Holmes
Mason Public Library (OH)
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