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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] 3 points 9 months ago

If your domain will NEVER send e-mail out, you only really need and SPF record to tell other servers to drop e-mail FROM your domain. Even that’s somewhat optional. If you ever plan on sending ANY outbound (you should at very least for the occasional ticket) then do DKIM, DMARC and SPF. The more of these you do, the less likely e-mails FROM your domain are to be flagged as spam.