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Consequences of a mail server offline?
(lemmy.ml)
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this post was submitted on 18 Jul 2024
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Sounds like you had an awful experience about self-hosting email. Want to share with this community so everyone learns?
I've been self-hosting Postfix for several years and it's not difficult, if you're absolutely confident what you do. I don't recommend it if you don't know basic behaviors and internals of SMTP and relaying. Also you need to know how to secure your server so you don't get spammed a lot and getting hammered with brute force attacks.
From time to time you need to react to delivery problems. Most interesting one is perhaps Microsoft, which you need to ask to whitelist your server or your email won't be accepted.