[systemd-devel] exim4 only queues mails sent by systemd service

[Kamil Jońca]

Lennart Poettering <lennart at poettering.net> writes:

> On So, 23.09.18 22:48, Kamil Jońca (kjonca at o2.pl) wrote:
>
>> It is something strange with sending mails from systemd system service:
>> assume we have service file /etc/systemd/system/mailtest.service:
>> 
>> --8<---------------cut here---------------start------------->8---
>> [Unit]
>> Description="Test maili"
>> [Service]
>> #User=kjonca
>> NoNewPrivileges=false
>> Type=oneshot
>> ExecStart=-zsh -c 'echo xxx|mail news'
>> ExecStart=-zsh -c 'echo xxx|mutt -F /dev/null -s subject -e \'set copy=no\' kjonca'
>> --8<---------------cut here---------------end--------------->8---
>> 
>> When I call
>> sudo systemctl start mailtest.service
>> Two messages are put in exim queue, but not deliveried immediately.
>> Why? What am I missing?
>
> Uh, this looks like something you need to ask the exim community,
> systemd can't make exim mail queueing decisions, that's entirely
> internal to exim.

Another puzzle, when I put "strace" in front of mutt - mail is delivered
immediately.
So it I suspect something with SUID/SGID binaries called from systemd,
but I do not know how to check it :(


>
> One question though: are you sure you have started the exim service
> properly beforehand? I am pretty sure exim won't process the mail
> queue if it's not running...

Everything works as expected:
- mails from cron
- mails from fetchmail
- mails from "--user" services
KJ

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