Hi Michael! 1) The standard Offline Address List is generated. 2) How can I find out whether users have access to OAL or not? There is no Security tab for OAL in the properties of OAL. Authenticated Users and Evereyone have standard default permissions in EXchange 2003. I think these permissions are enough for users to access Exchange. The users can use IMAP/POP3 or OWA without any problem. The problem is with RPC over HTTP users. Best Regards Mustafa