Forward this user's e-mail to...

Users->AddUser->ForwardTo

This field allows you to optionally specify one or more e-mail addresses that this user's e-mail is either forwarded to or copied to.

Forwarding:  To have all the user's e-mail forwarded to one or more e-mail addresses, enter the list of addresses separated by commas in the 'Forward mail to' box.  For example, the entry "andy,Joe.Blogs@aol.com" will forward this user's e-mail to the local user 'andy' and the external e-mail address 'Joe.Blogs@aol.com'.

Copy-forwarding: To have a copy of a user's e-mail forwarded to one or more e-mail addresses, enter the list of addresses, including the user's own system name, separated by commas in the 'Forward mail to' box  For example, if you have a user called Joe Bloggs, who has a system name of bloggsj; and a separate Internet e-mail address of "Joe.Bloggs@aol.com", then the entry "blogsj,Joe.Blogs@aol.com" will deliver Joe's e-mail both to his Server mailbox, and his AOL mailbox.