here is my setup: I have a smtp server which is also the main MS record for domain xyz.net. This gateway also has some pop3 account for the domain xyz.net. I have set the gateway to forward all mail to my Exchange server when the email does not exist on the pop server.
My problem is that since we upgraded to Exchange 2003 smtp work differently from exchange 5.5 IMC.
I did remove the check box this this exchange organisation is responsible for all mail delivery to this address on the xyz.net recipient policy.
I also can not add the gateway to forward all mails with unresolved recipients to host in mesages folder in Default SMTP Virtual server propreties because with all the mails that are sent to unexisting address from spammers I create a loop from Exchange to gateway.
I know I need to create two separate rule for incomming and outgoing from Exchange 2003 but I am not familiar with the routing of exchange 2000/2003.
Can you help? Thanks