Ok, when I send a test email via the web interface of gmail, I get a reply from the DH mail server:
This is the Postfix program at host spunkymail-mx1.dreamhost.com.
I'm sorry to have to inform you that your message could not be
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The Postfix program
firstname.lastname@example.org (expanded from email@example.com):
User unknown in virtual alias table
Final-Recipient: rfc822; firstname.lastname@example.org
Original-Recipient: rfc822; email@example.com
Diagnostic-Code: X-Postfix; User unknown in virtual alias table
so it looks like I'm doing something wrong with the forwarding.... is this a common mistake?