I have the same problem. I'm running the latest RELEASE version: 10.2.0-RELEASE_82
I have client.com as the main account and then I parked these two domains:
clientotherdomain.com
clientstillanotherdomain.com
The DNS is fine. The parking is fine. HTTP requests forward as expected.
But when I add the two parked domains as Domain Email Forwarding pointing to client.com, it doesn't work. I get the following error in my exim logs:
Code:
2005-05-18 15:24:43 H=(blah.blah.blah) [123.123.123.123] F=<me@mydomain.com> rejected RCPT <customer@clientotherdomain.com>: no such address here
One thing I've noticed: the DNS records for clientotherdomain.com show the MX line as: clientotherdomain.com. Shouldn't the Domain Email Forwarding functionality actually _change_ this to be: client.com ??
Any thoughts folks?
Thanks in advance!
-Danimal 
UPDATE: I manually modified the DNS record so that the MX line for clientotherdomain.com points to client.com. The change has taken effect, but it's still not working... I.e. email to customer@clientotherdomain.com still gives the "no such address here" error, even though there is a valid account: customer@client.com. *sigh* Any thoughts anyone?