Hello, i have setup a mailserver using fetchmail and postfix to retrieve mail from ISP and deliver via courier imap to local users.

Mail is sent via ISP smtp using relay setting in postfix main.cf.

Now if setup an imap account and access it locally on server i can send and recieve mail ok, but if i setup outlook on network PC i can recieve email ok but cannot send, the connection keeps being refused.

Not sure if this is related but even with password saved in outlook each time outlook is started password has to be entered again.

Logs don't show anything un-usually, though there is a problem writing to /tmp/procmail_log

MD 10.1

any ideas?