Simple is Best

domain controler with MS ad crashed last week becaure virus,but backup server is alive,after the GlobalCatalog server down,then the exchange can't startup, though the backup server is GC too,after two days work on recovering exchange server, nothing can do more even with ms support. shit MS.
Total AD was rebuided because many error in the old Ad, win2k3 and exchange2k3 sp1,but the internet mail can't be sended,only stay in the smtp query.maybe be the bug under next url
http://forums.msexchange.org/ultimatebb.cgi?ubb=get_topic;f=18;t=000384
after set the internet outgo mail relay to a linux postfix server,the problem was solved,nothing can said to MS.