We're using dovecot on a help desk ticketing system. The system doesn't perform any cleanup of IMAP mailboxes so we have a regular cronjob doing this:
/usr/bin/doveadm flags add -A '\Deleted' SEEN SENTBEFORE 12w && /usr/bin/doveadm expunge -A DELETED MAILBOX '*'
Recently, doveadm has been reporting this:
doveadm(nobody): Error: User initialization failed: Namespace '': mkdir(/nonexistent/mail) failed: Permission denied (euid=65534(nobody) egid=65534(nogroup)) doveadm(nobody): Error: User init failed doveadm(DEFAULT-CW-USER): Info: User no longer exists, skipping
Indeed, using
doveadm user "*"
does include "nobody" in the list but I can't understand why. The mail group in /etc/group does not include "nobody" and there are users in /etc/passwd with similar attributes to "nobody" that do not appear in the list of users from doveadm.
What can I do to tell doveadm to forget about "nobody"?
Thanks.
Philip