I have a client using Exchange 2000 with the Instant Messaging option over a VPN connection. The connection is a PIX-to-PIX VPN and both are running 6.0(1).
The only thing not working over the VPN connection is this issue with Messenger/Exchange: On the local LAN (where the Exchange server is) a user can send/receive IM's to users on the same LAN just fine.
We can also receive IM's from a user on the remote LAN, but we can't send IM's to users on the remote LAN.
Any idea why I can't send IM's to users on the remote LAN over a VPN connection?