Hello Tobias, On Sat, 8 Sep 2018 23:24:53 +0200 collect at shift.agency wrote: > What else would be relevant? How did you move the maildirs to your new setup? I also see the error message mentioned in versoin 2.2.13, when copying a public folder back from backup, that's older than the users' dovecot.index.pvt in /var/vmail/mailboxes/... - Chris