One of my users has bought an iPhone and wants to use it with the built-in mail client. According to some documentation we found, we need to allow access to the Exchange server on IMAPS port 993. Logging on my ISA 2006 (Standard) server says traffic is being allowed to pass (I set up a rule to allow it). But then errors on the Exchange server seem to indicate we need another certificate to allow the connection to work correctly. Does that cert need to be on the ISA server or the Exchange server? Can anyone please point me to some direction for how to correctly publish IMAPS protocol through an ISA 2006 server? I looked around on the ISAServer.org site and didn't see anything. Thanks, Rob -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Rob Moore Network Manager 215-241-7870 Help Desk: 800-500-AFSC