I have a facility that has lost power & internet connectivity due to hurricane Isaac. The power came back (still no internet) and now when clients (win 7 & XP) open their Outlook 2007, it prompts them for login credentials, and then won't connect to exchange (SBS2011). I've attached a pic of the exchange services running on the server. The clients have no problem accessing file shares on the server. I don't know if the internet connectivity issue is causal or coincidental, but I was hoping someone might have some ideas.