Well,

these is the complete output for dovecot -n :

mail:~ # dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.8 (0c4ae064f307+) # OS: Linux 4.1.31-30-default x86_64 openSUSE 42.1 (x86_64) auth_mechanisms = plain login mail_gid = vmail mail_home = /var/vmail/mailboxes/%d/%n mail_location = maildir:~/mail:LAYOUT=fs mail_plugins = " acl" mail_privileged_group = vmail mail_uid = vmail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate namespace { hidden = no ignore_on_failure = no list = children location = maildir:%%h/mail:INDEX=%h/mail/shared/%%u:CONTROL=%h/mail/shared/%%u prefix = shared/%%u/ separator = / subscriptions = yes type = shared } namespace inbox { inbox = yes location = mailbox Archives { auto = subscribe special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Notes { auto = subscribe } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { acl = vfile:/var/vmail/dovecot-acl acl_shared_dict = file:/var/vmail/db/shared-mailboxes.db quota = maildir:User quota quota_exceeded_message = Benutzer %u hat das Speichervolumen überschritten. / User %u has exhausted allowed storage space. sieve = /var/vmail/sieve/%d/%n/active-script.sieve sieve_before = /var/vmail/sieve/global/spam-global.sieve sieve_dir = /var/vmail/sieve/%d/%n/scripts zlib_save = gz zlib_save_level = 6 } protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } user = vmail } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = required ssl_cert =