Hi guys! I had setup MS certificate server for my OWA, It work fine within the firewall. (I am running ISA on w2k) I can use hhtps for OWA. But I can't get it work when the client is outside of ISA. Do I have to setup a special filter for it? Or I have to do it thru Verisign? Can Microsoft CA issues certificate to user outside of its network? Thanks, Darren