I have a problem emailing out of an Elastix machine. or the problem could be receiving emails on an SBS 2003 server.
Basically, If I send an email to myself (firstname.lastname@example.org) from the Linux console I can receive it fine. However, if I send an email to email@example.com the email is not received.
The Elastix machine and the server (Exchange / SBS 2003) for domain2.com.au are in the same LAN and share the same Pfsense firewall.
If the email to domain2.com.au is sent from a remote Elastix server it is received.
So i guess the issue must be happening because the Elastix server i need to configure is on the same local network as the domain2 SBS.
On the firewall, I've forwarded ports 25 and 100 to the SBS server.
What am I missing?