Running services, network usage, memory usage, bandwidth, disk I/O, successful logins, whether the thing is even alive, etc...
So far my only method has been "hope and pray".

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[–] 4 points 1 week ago

Been running one for many years, mostly issue-free. Had to request whitelists way in the beginning, but things turned out ok.

Check out this super great guide. https://workaround.org/ispmail-trixie

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