How are your two servers setup, FE and BE? How are you making the connected to the net, are you using a mickey mouse Linksys router or something more stable like ISA server? Do you have a split DNS? We need more input! Andrew -----Original Message----- From: Hilal Yaman [mailto:hyaman@xxxxxxxxxx] Sent: Thursday, July 14, 2005 6:50 PM To: [ExchangeList] Subject: [exchangelist] RPC ove HTTPS switch user http://www.MSExchange.org/ Hi All I have a Exchange server with RPCoverHTTPS (Server1) i build a new Server (server2) and Switchover the user from Server1 to Server2 the problem that after switching the user to Server2 i can't connect to the user mailbox using RPCoverHTTPS. if i create a new user on server2 then i will be able to connect useing RPCoverHTTPS. Any Idea what i miss.