i have an exchange 2003 up and running on windows 2000 domain. i upgraded the domain to windows 2003 on the same hardware. After the domain upgrade the exchange services doesnt start, i.e. the system attendent service fails to start. I know this is due to the DNS. Is there any workaround for this. Earlier i did the domain migration on the different hardware by installing an Additional DC and promoting to DC and transferring all the 5 FSMO. even in this situation the exchange services didnt came up. i am in an hanging position, need to have exchange running on new domain ASAP regards shoeb