Mail Server on Docker: sanity checks

I have a shiny mail server on I decided to manage it on first person because it is important.

I had some troubles sending mail to Hotmail: they banned my IP. So I find out this fantastic site which will check for you a tons of things, like correct DKIM signature and so on.

So I was able to open a ticket to Microsoft exposing the issue. And it is incredible, a real guy answered (or a super AI-azure powered robot running on WindowsServer…I dunno but I think it the guy is cheaper).

Microsoft solved the issue in a week, smooth like a glass.

Extra tip: refer to too for a list of tips


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