Exchange 2003 NDR When Sending Through Smart Host
Posted on 2006-07-10
I have an Exchange 2003 server that is configured to send all SMTP mail through DNS2GO's smart host. The problem I'm having is that no mail is being delivered outside of my local network. I am using port 366 as my ISP (read bastards) are blocking port 25 outbound traffic. I can see the messages in the que, but they never leave the Exchange box. I am able to telnet to DNS2GO smart host from the server in question so I don't think it's a connectivity problem. I don't know if it matters but I have 2 seperate mail domains configured on this Exchange box. I hope someone here can help me figure this out!