On Tue, Jun 15, 2021 at 5:13 AM Kenneth Porter <sh...@sewingwitch.com> wrote: > > What happens if I list multiple services in a Wants= and After= clause that > are mutually exclusive (eg. sendmail/postfix/exim? How can I say "This unit > needs to send mail" without knowing which is enabled?
Unfortunately "need to send mail" is not well defined.. a) does it need to talk to smtp/smpts/submission ports ? then your smtp daemon needs to socket activate properly b) Needs to execute the sendmail binary ? your sendmail command must queue your messages for "later", Otherwise your service must start after any of this services but not want any of them, bad news is it will race anyway and your app still shouldn't care about what daemon or not is handling the email so goto a) _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
