I have recently upgraded to Exchange 2007. I have an email account that is set to auto forward mail to a DL. Under Exchange 2003 mail would be correctly modified ie. from field, insertion of FW: etc. but now with Exchange 2007 mail appears to be redirected to the DL, ie it appears that the original sender sent mail directly to the DL. Any ideas on where to start nutting this out?

Where is the autoforward ruleconfigured, is it a rule done with outlook client or is it done on the user object in AD?