ok that gave me some indication I see that this is the problem but where do I fix this:
Jul 10 07:45:31 ns1 courier-imapd: Connection, ip=[::ffff:127.0.0.1]
Jul 10 07:45:31 ns1 courier-imapd: LOGIN,
[email protected], ip=[::ffff:127.0.0.1], port=[49672], protocol=IMAP
Jul 10 07:45:31 ns1...