OK...Exchange 2003 was working fine. I have (had) 3 domains happily sending and reeiving mail.
I logged into the manager and tried to add another POP connector for a new domain, and everything went pair shaped!
Now none of my domains will send or receive. I've tried re-running the internet mail wizard, no effect. I can connect through outlook and authenticate, but every message I send gets sent back saying "The destination server for this recipient could not be found in Domain Name Service". Incming mail is not working either, however when I send a message from Gmail I do not get any messages saying it didn't make it.
So, how to I configure Exchange 2003 to receive internet mail and send internet mail for 3+ domains???