On Mon, Sep 24, 2018 at 7:51 PM Mantas Mikulėnas <graw...@gmail.com> wrote:
> > > On Mon, Sep 24, 2018, 16:29 Kamil Jońca <kjo...@o2.pl> wrote: > >> Lennart Poettering <lenn...@poettering.net> writes: >> >> > On Mo, 24.09.18 12:04, Mantas Mikulėnas (graw...@gmail.com) wrote: >> > >> >> > 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. >> >> > >> >> > 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... >> >> >> >> exim's a bit oldschool, and whenever you pipe a message to 'sendmail', >> it >> >> immediately forks a worker to deliver the message synchronously, >> regardless >> >> of the main daemon running. >> > >> > Uh, what? Are you saying exim is forking off privileged daemon code >> > from unprivileged user command invocations? Christ, that's ugly. They >> Yes. exim is suid root to deliver mails. >> >> > really really shouldn't do that. >> >> But they do. >> >> > >> >> > It appears to me exim should figure out some way how clients such as >> > 'sendmail' invocations can trigger queue dispatching some other way, >> > for example, by making exim listen on some IPC of some form, or using >> > inotify or anything else. >> IIRC postfix is written that way, but I want to use exim, as it is more >> configurable. >> KJ >> > > When I was writing exim systemd units for Arch a few years ago, I > experimented with using queue_only=true and no permanent daemon at all, but > triggering the queue runner via systemd.path units (start as soon as spool > is non-empty) and timers (to replace the usual -q15m). > > .path units are inotify-based and can start exim as soon as > /usr/bin/sendmail puts something in the queue. > > This didn't work well enough IIRC, but if it did, then it'd provide almost > postfix-like architecture. > Or just making 'sendmail' send a SIGALRM to the main daemon would do the job perfectly well, I suspect... -- Mantas Mikulėnas
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