I have Exchange 2003 running on a Windows 2003 Enterprise server SP2 and I can not forward to an external address, I have done this on other Exchange 2003 server and it works.
Here is what I Do.
First, I create a mail-enabled contact:
" Open the "Active Directory Users and Computers" tool. Expand the organization, highlight the "Users" folder, and right-click; from the pop-up menu, select "New, Contact."
" In the "New Object - Contact" window, choose a name for the contact and click Next. "External username"
" At the next window, check the checkbox for "Create and Exchange e-mail address" and click on the "Modify..." button. Next, I choose "SMTP Address" as the address type, then I enter the external email address and click "OK." Click "Next," then "Finish
" In the Active Directory Users and Computers snap-in, I double-click on the user whose mail I want to forward.
" Click the "Exchange General" tab, then click "Delivery Options."
" In the section for the forwarding address, check the "Forward To" radio button, then click the "Modify" button.
" Enter the alias of the mail-enabled contact I created, and hit the "Check Names" button. The name appears underlined.
And it does not work on this server. I have used this method on other Exchange 2003 servers running on Windows 2003 servers.
Thanks in advance for the solution to this problem.