Question : Conflicts using one or more SMTP Connectors in Exchange

We run Exchange Server 2003 and use an SMTP connector for all of our outgoing mail. So for that one, the address space has the * next to it. The problem is that there are about ~10 problem domains that we have constant trouble sending messages to. So I tried to create a 2nd SMTP connector going through Verizon (our ISP), and called it 'problem domains'. I used outgoing.verizon.net and smtpout.verizon.net as the connectors (so it's listed as outgoing.verizon.net;smtpout.verizon.net).

Anyway, my question was whether or not having one connector that has the * (all outbound email) would trump the second connector that has some specific problem domains listed?  

I've tried all the normal tests (reverse DNS, checking Spam blacklists, etc)., and we come out clean on those. We've also run exchange tests to see if our exchange settings were configured correctly and they always come out well. So this is why we were hoping to use the Verizon SMTP connector.

Any advice or input on the situation would be greatly appreciated. Thanks!

Answer : Conflicts using one or more SMTP Connectors in Exchange

If you use an SMTP Connector that has specific addresses defined, Exchange will use that first as it looks for defined addresses before seeking the wildcard (*) delivery.

In your SMTP Connector that you have created for "Problem Domains", place the domains in the address tab of the Connector, for example:

verizon.net
gmail.com
hotmail.com

etc....

And if you haven't already done something similar, send an email to: [email protected]om. You will get a reply back which will identify the IP that your mail is coming from. And just double-check that you have a Reverse DNS record for that IP. You probably do, but just to double-check.

http://www.amset.info/exchange/smtp-connector.asp