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by superkuh 1510 days ago
Well, the best time to start is now... but without a domain name I don't think you'll have much luck. If you want to learn how to set up and run a mail server I cannot recommend https://workaround.org/ispmail enough. These tutorials cover all the background and high-level concepts for why you're doing things in addition to the details needed to implement a proper mailserver.
1 comments

Thanks for the link, latest version has some mistakes but in general it's good.

I got myself a domain and trying to set up my mail server, but my VPS hosting is blocking outbound port 25. So I can receive emails, but can't send anything. ispmail guide has no workarounds for that…