Hi, I have some MAC users with Entourage 2004 who want to connect to my Exchange 2003 server over the Internet. Can they use RPC-over-Http? or VPN? or is there some other connection method for MACs? Microsoft's technical white paper describes RDC connectivity but I cannot give RDC access to external email customers for security (we permit RDC only for system admins). http://www.microsoft.com/mac/support.aspx?pid=exchange Mike