I am using MS SBS 2003 in two different sites, both with Exchange 2003.
i have created a mailbox at each site eg
email@example.com & firstname.lastname@example.org
and at "Site 1" i have also created a Contact with the "site 2" address, in the delivery options of site 1 i have set up a forward to the contact. However, when i send and it tries to forward it on i get this return email:
Arrival-Date: Wed, 21 Jun 2006 10:56:22 +0100
Diagnostic-Code: smtp;550 <email@example.com>... Not permitted