I have a mail server that is running some antiquated software post.office, but the server software is probably irrelevant.
The OS is windows 2000
It is behind a router Cisco 2524 and between the router and the server is a PIX 506
The website is accessible from the internet and the mail server receives mail ok.
When mail is outgoing from the client in this case outlook it does not make it to any outside addresses such as hotmail, yahoo, gmail, and others as well.
It DOES send mail to all of the workstations on the LAN.
I am guessing that it is the firewall and or router, but I do not know how to verify. It seems that it would have to be the firewall or router or mail would not be sent to local clients. I don't know if the firewall is simply dropping the mail or maybe does not know how to route it. I can telnet into both devices.
Thank you Laura