Hello Timo,

2.2rc3: replication unconfigured (no "replica" in doveconf -n output),

doveadm replicator status

starts the dovecot/replicator process, which keeps running, leading to "sync: User has no mail_replica in userdb" errors for each user every 5 minutes. Same after "doveadm replicator replicate some-even-nonexisting-user".

Lutz