Hi again, I have a working test environment not but I don't feel very comfortable with a non encrypted connection between the proxy/director and the backend servers. If I set ssl = required on my backend server I get this error: imap-login: Disconnected (tried to use disabled plaintext auth) Is there a chance to encrypt this connection? # 2.0.16: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.3 auth_debug = yes auth_verbose = yes director_mail_servers = 172.17.0.31 director_servers = 172.17.213.213 disable_plaintext_auth = no lmtp_proxy = yes mail_debug = yes passdb { args = proxy=y nopassword=y driver = static } service auth { unix_listener auth-userdb { mode = 0600 user = dovecot } } service director { fifo_listener login/proxy-notify { mode = 0666 } inet_listener { port = 5515 } unix_listener director-userdb { mode = 0600 } unix_listener login/director { mode = 0666 } } service imap-login { executable = imap-login director } ssl = required ssl_cert =