Easily list mail DNS records via this PowerShell script

Reading Time: 2 minutes I get to investigate quite some mail environments in my work as a consultant. At a certain point you see some patterns emerging. One of those patterns is the correct configuration of mail related DNS records. It's one of the first things I check when I must check an unfamiliar environment. I have talked about this anti-spoofing topic on numerous occasions. I would compare it to a ping test when there are network issues. For several years I have worked

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