Ik have installed a mailserver with: Postfix, Dovecot and fetchmail.
Most of all works fine:
I can fetch my mail with fetchmail on my server.
I can send mail with Postfix on my server.
I can get my mail with Outlook on my Windows system from my server.
The only that doesn't work is that I can not send mail from my Windows system using my mail server...
When I do a port scan on my mail server all nessesary port are open (110, 143) but port 25 is closed. Isn't this the port that Outlook uses to send mail?
( When I stop Postfix and I start Sendmail I have the same problem )
Can somebody help me?