exim sending mail to world problem

[matze81]

Hi there,

i just set up a mail server like it is explained in this thread.

https://forums.gentoo.org/viewtopic.php?t=83500&highlight=exim+spam+clam

After doing all the stuff mentioned in the thread i'm able to send/receive emails to/from local users. It's also possible to receive emails from "world".

Now my Problem:
When try to send an email to a world address i find the following error in the exim_main log and the mail will not arrive:

[matze81]

Hi,

could this problem be a result of blocked ports ?!
I'm behind a hardware router an forwarded the smtp, imap, pop and the dns port.
Is there another port wich schould be forwarded in order to fix the problem?

[doublehp]

For