Hello ! I want to change the mailclients from pop3 to imap service. Have done the perfect debian sage setup and ispconfig (with maildir). (system ist running stable for long time with many users) By testing imap with outlook I coudn´t login. I did a "netstat -tap" with the following output: Code: Aktive Internetverbindungen (Server und stehende Verbindungen) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:imaps *:* LISTEN 1 444/couriertcpd tcp 0 0 *: pop3s *:* LISTEN 1 467/couriertcpd tcp 0 0 localhost.localdo:mysql *:* LISTEN 2 0329/mysqld tcp 0 0 *: pop3 *:* LISTEN 1 453/couriertcpd tcp 0 0 *:imap2 *:* LISTEN 1 430/couriertcpd tcp 0 0 *:www *:* LISTEN 3 886/apache2 tcp 0 0 *:81 *:* LISTEN 2 4924/ispconfig_htt tcp 0 0 *:ftp *:* LISTEN 1 477/inetd tcp 0 0 *:ssh *:* LISTEN 1 685/sshd tcp 0 0 *:smtp *:* LISTEN 4 564/master tcp 0 0 *:https *:* LISTEN 3 886/apache2 What I have to do that I can login in with imap? All services seems to work? Thanks for an answer. oki vienna /// Firewall port 143 is edit in ispconfig to yes. And now ist works fine.