I have a Domain, let's say it's
I have an IIS7 server,
example.com is pointing to that IP and the Reverse DNS is also set to
The e-mail service for this domain is handled by Google Apps. No e-mail handling were done through my own server.
But the server has some applications where it would need to send e-mails.
At first I was using Google's SMTP and it was fine for tests and small scale stuff, but it had a limitation of sending ~50 e-mails per day and it was barely enough, even for testing.
Then I set up an SMTP on my own server. This needed a whole bunch of configuration, and it seems to be working fine now.
Since the default domain of my SMTP is
example.com, every time I send a mail to any example.com address it lands in the Drop folder. Since nothing will ever query that Drop folder, as anything e-mail related is handled by Google Apps, the e-mails will never arrive.
I'm a little afraid to mess with the domain settings, as e-mail servers tend to block e-mails entirely where the domain of the SMTP seems forged (that is why they do a reverse dns lookup).
Is there a way to ignore the fact that the e-mail is sent to the same domain as the default domain on my SMTP server, and send the e-mail anyway?
Should I set my default domain under the SMTP domains to something different to "trick the system"?
I'm not an expert on the subject and I don't want to mess up the SMTP functionality so let me ask:
What would be the best way to proceed?