Sirs, I would like to put more details onto it. We have two old FE servers and two new FE servers. Two old FE are in NLB, uses Exchange 2003 SP1. Two new FE are not clustered. They uses Exchange 2003 SP2. Two BE uses SP1. OWA access is ok for two old FE + BE cluster. OWA is not ok for two new FE + BE cluster. In OWA standard mode, can login and logout. Web interface is...



