Watchguard Firebox - notes
When you have a Watchguard Firebox and Exchange 2007.
Remove the SMTP Proxy > External IP to internal Exchange server IP and replace it with a Watchguard service called SMTP filter.
Then your Exchange Edge server can authentificate incoming smtp connections.
Also the DNS setup on the Firebox should point to the internal DNS of the DC.
Cheers
JB
June 18th, 2007 5:43pm