Blocking passdbs that returned some userdb_* fields returned also an extra userdb_<username> field.
Blocking passdbs that returned some userdb_* fields returned also an extra
userdb_<username> field.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot