Hello All, We have two windows 2003 servers. This is the the forest server running windows 2003/Exchange server 2003 std edition with service pack2. I am planning to insatll Exchange server 2003 service Pack2.I printed and read exchange server 2003 service pack 2 release notes Before moving forward, I need what things need to be considered. As per the notes: 1. Windows 2003 servpice pack1 2. Hot fixes: 898060: How can i check manually whether i installed already or not. I try to search with in windows dir. No results. If not i need to intall this one before installing sp2. 3.Do we need to install this one? : Windows Server 2003 may stop responding when you enable the ?Sender ID Filtering? setting on an SMTP virtual server in Exchange Server 2003 SP2. 3. What else i need to consider. Please help me out. thanks for all your help. Suresh