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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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Receive only email server (feddit.cl)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

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Hello. Let's say I want to selfhost an email server (smtp + imap) that only will be used to receive email.

I only will send email internally (from my domain to my domain) and receive from 3rd parties.

Should I setup DKIM, DMARC, SPF and reverse IP lookup?

To be honest, I'm having a bit of hard time understanding the madness of email authentication. So I can't figure it out by myself if those mechanisms are needed in my case.

I haven't deployed anything, but probably will use Stalwart. It looks like it's easy to deploy. Is there any other beginner-friendly email service I should read about?

Thanks!

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[–] [email protected] 2 points 9 months ago

Some servers blacklist you no matter what you do because you’re not a big player in the e-mail space… Outlook. Fuck Outlook. M365 doesn’t do that though.

Also the idea that reverse IPs are needed (in practice) when SPF, DKIM and DMARC are in use is insane. I have literally told you my public key and signed the e-mail. It’s me. You don’t need to check the damn PTR!