Roundcube requires php-imap, which is no more supported in later versions of php. Sieve is not in sql, only the virtual users created by postfixadmin.

I don't understand what the master user should be. In 10-master.conf I have service auth { unix_listener /opt/local/var/spool/postfix/private/auth { mode = 0666 user = _postfix group = _postfix } unix_listener auth-userdb { mode = 0600 user = _vmail }

Auth process is run as this user.

#user = $default_internal_user user = _dovecot } service auth-worker { user = _vmail }

Who should be defined as the master user _dovecot or _vmail

Horst