Exim VS OpenSMTPD

Documentation for ARC is pretty sparse.

The instructions for setting it up in Exim (default MTA on Debian systems) can be found here: https://github.com/Exim/exim/blob/master/doc/doc-txt/experim...

(AFAICT, there is absolutely no mention of ARC in the main Exim documentation: https://exim.org/docs.html)

Exim:​​​​​https://www.exim.org/

EXIM is a popular option, though it seems to be subject to just as many vulnerabilities and exploits as exchange is.. so either way you go make sure to patch regularly

Run your own. Usually with Exim or Postfix.

I can either direct particular addresses to a mailbox on the VPS where they can be retrieved with POP3, or can forward them to any arbitrary address. Or anything else I can configure exim to do.

I use Exim

Any MTA will do, including OpenSMTPD, Postifix, Exim, Sendmail, qmail.

OpenSMTPD

opensmtpd Like: Reasonable sized, reasonably easy to configure Dislike: Easy to shoot yourself in the foot, DKIM setup is a p.i.t.a.

Sounds like OpenSMTPd https://www.opensmtpd.org/ in that its a rewrite of older confusing SMTP servers.

Any constructive suggestions about what beginners should refer to? Is there anything better than the FAQ? (And, any thoughts about a guide for smtpd? I know this is a rather different question, but I'd love to find something beyond just the manual pages at www.opensmtpd.org, )

OpenSMTPD\ (3 comments)