Re: [PATCH] opensmtpd: Fix crash during authentication

["Clément Lassieur" <clement@lassieur.org>]

Hi Adam,

Adam Zimmerman <adam@digitalpirate.ca> writes:

> Hi all,
>
> I'm running a mail server that I recently migrated to GuixSD, and I
> found this issue when trying to get opensmtpd set up.
>
> When using authentication from a table, opensmtpd would crash whenever I
> tried to authenticate. I found this patch which fixes the issue. It's
> already been merged into the opensmtpd master branch[1], and will be
> fixed in the next release which apparently will be around
> October/November this year.
>
> [1] https://github.com/OpenSMTPD/OpenSMTPD/pull/835
>
> I also noticed another issue which I'm not 100% sure how to solve
> properly. When rebooting the server, opensmtpd fails to start. I think
> the reason is that the shepherd service only has '(loopback) listed in
> its requirements, and I think it might be trying to start the server
> before the network comes up. When I ssh into the server and start it
> manually, it works fine.
>
> My first thought was to change the requirements to '(networking), but
> could that cause issues for people who only use opensmtpd as a local
> delivery server?

I run OpenSMTPD 6.0.3p1 on GuixSD, I use authentication from a table,
and none of the issues you described happened to me.

Here is its configuration:

--8<---------------cut here---------------start------------->8---
pki mail.lassieur.org certificate "/etc/smtpd/certs/fullchain.pem"
pki mail.lassieur.org key "/etc/smtpd/certs/privkey.pem"
table passwd file:/etc/mail/passwd
listen on 0.0.0.0 port 25 tls pki mail.lassieur.org
listen on 0.0.0.0 port 587 tls-require pki mail.lassieur.org auth <passwd>
limit mta for domain gmail.com inet4
accept from local for any relay
reject sender "@lassieur.org" for any
accept from any for any relay via smtp://mail2.lassieur.org
--8<---------------cut here---------------end--------------->8---

I don't understand why your setup would behave differently.  Could you
share a bit more of your configuration?

Clément