Re: IMAP Idle in Daemon mode as non-root user

The plan ist to put Fetchmail between my mailserver (mailcow) and the Internet to collect mails from mailboxes without delay.
Fetchmail shall run on a Debian system.


> Gesendet: Mittwoch, den 26.07.2023 um 21:41 Uhr
> Von: "Matthias Andree" <[email protected]>
> An: [email protected]
> Betreff: Re: [Fetchmail-users] IMAP Idle in Daemon mode as non-root user
>
> Am 26.07.23 um 16:30 schrieb [email protected]:
> > I would like to have multiple Fetchmail instances running on machine. All instances shall be started directly on system start-up and running all the time until the system is shutdown.
> > Each of the instances shall hold one IMAP Idle connection.
> >
> > Is using the daemon mode the correct way or would it only be required to start/call each Fetchmail instance once in start-up and it will continue to run?
>
> Daemon mode is not a supervisor, it's a simple way to have fetchmail
> delay and re-poll at the end of a loop.
>
> > What about errors (e.g. interruptions of the IMAP connection), will fetchmal simply continue its processes or will they abort and have to be restarted?
> > How to ensure that Fetchmal runs forever and does never close a process?
>
> ... that you cannot reach with fetchmail alone, you will need use an
> external supervisor process which itself is privileged to not be killed
> by the system. fetchmail does not have supervisor code.
>
> The --daemon would apply should fetchmail fall out of the --idle in a
> more or less normal manner, but if you want robustness, an external
> supervising process is advised. You haven't mentioned about your OS, so
> we don't know what's already there and possibly suitable.
>
>
>
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