We are starting a pilot program with google apps and are having an issue with exchange users being able to send to the google apps pilot users. We have setup dual delivery so that emails are received in both locations. Emails sent from exchange are sent back to exchange. All other outside emails are being routed to google as we have set emails to go to their servers first based on mx records. How do we configure our Exchange 2003 to not take the lazy way out and do an mx lookup instead?

I made those changes this morning and all of our gmail users are now able to receive email from the exchange. However, our exchange users are no longer receving any emails from anyone.

What did you do exactly? The MX records would probably need to point to Exchange, so that Exchange sends the email back to Google. I don't think Google have a way of getting the email to your Exchange server in a co-existance environment. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

I used the link that was in your first reply and used Method 1.

did you check that your mx records are set up properly at www.unlocktheinbox.com/dnslookup/mx/ ?