I have experienced this error message when I set up brand new R5 mail clients on pc's that have not had Notes installed on them before. It occurs when the user tries to open the mailfile or some other database that resides on the server. What I have noticed is that in order for you to connect to the you have to setup a connection doc locally and then it seems to cache the server info from then forward. Am I missing something? (note: we have tcpip only, able to ping the server etc.)