Occasional service disruptions

[Oscar del Rio]

On 2022-06-06 11:38 a.m., Nikolaos Milas wrote:
> Jun 06 12:01:22 imap(user1)<29639><Vr0atcPg5M3BXBCl>: Warning: Inotify 
> instance limit for user 500 (UID vmail) exceeded, disabling. Increase 
> /proc/sys/fs/inotify/max_user_instances
> ...
> Jun 06 12:01:26 imap(user2)<29793><rZuSt8PgztoKyVSG>: Warning: Inotify 
> instance limit for user 500 (UID vmail) exceeded, disabling. Increase 
> /proc/sys/fs/inotify/max_user_instances
>
> Restarting Dovecot returns things back to normal.

This might help:
https://doc.dovecot.org/configuration_manual/os/

increasing inotify settings, as the error message suggests. E.g. in 
/etc/sysctl.conf