this post was submitted on 14 Apr 2024
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I'm looking for a simple sendmail replacement to receive local mail, such as from cron and service failures and forward it to on to a real SMTP server.

I have used msmtpd successfully but thought I'd ask if folks have other solutions they like.

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[–] [email protected] 6 points 4 months ago (3 children)

@atzanteol @[email protected]

ssmtp is unmaintained.

msmtp is the recommended successor. The Arch wiki recommends also considering OpenSMTPD, which I haven't looked at yet.

https://wiki.archlinux.org/title/SSMTP

[–] [email protected] 1 points 4 months ago

@atzanteol

Looks like to setup OpenSMTP as a relay, you are recommended to use procmail, which is itself unmaintained.

https://wiki.archlinux.org/title/OpenSMTPD

Still msmtp lacks one feature that I had to workaround: It wasn't properly handling cron mail that was generated to a bare address like root or test. I solved that by writing an sendmail wrapper which rewrites the input just before it's handled to msmtp.

https://github.com/marlam/msmtp/issues/98
https://github.com/chriswayg/ansible-msmtp-mailer/issues/14

[–] atzanteol 1 points 4 months ago
[–] [email protected] 1 points 4 months ago

I just started using OpenSMTPD as a backup relay and it seems to work for that. Very lightweight and easy to set up.