Dear All, I really need help in this issue, I have one IBM Server Dual Quad core Xeon Processor with 8 GB RAM member in domain domain.local and installed with Windows 2003 R2 Standard x64 bit. I successfully installed Exchange 2007 on it and configure one Mail Box and it worked perfectlyall roles in the same server "MailBox, Hub Trasport, Client Access" after I installed Exchange SP1 then all the exchange services stop working after restart the system any idea what is the problem??? or how to resolve this issue??

Hi, There must be some events logged in the application log that can help resolve the issue Leif