For the past few weeks, we've had a problem that the two of us in the office using Vista were unable to access Exchange over the VPN server. This was a new development we've been running vista for over a year now. Outlook would just hang for hours even. Occasionally I would get "Microsoft exchange server is unavailable".
After doing some troubleshooting we finally figured out the Outlook was trying to communicate on port 135 (RPC Endpoint Mapper) to our DCs. We had to make firewall changes to allow communication from our VPN server to our DCs on port 135.The thing that has left us scratching our head is why is it just these Vista clients? We have probably 30-40 other users running Office 2007 and they have no issues, and why did it work all that time before? It only seemed to be the vista clients. We do not use RPC over HTTP. Any thoughts? Thanks, Todd ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
