I am running Exchange 5.5 Sp 4 on Windows 2000. I have added an external mailbox (hotmail, yahoo) to a few users so they can check there mail remotely while on vacation but mail is not being forwarded. Mail gets delivered to their internal mailbox fine. Mail gets delivered if I send e-mails directly to their external mailboxes, but the forwarding just won't work. Anyone ever seen this before?