ttp://www.ISAserver.org Tom ! Let me say that your 5 parts article about "Publishing Exchange 2003 Outlook Web Access (OWA) with ISA Server 2000 - Table of Contents" is EX-CEL-LENT !!! :-) However, i'm experiencing some troubles when i try to import the certificate in the ISA machine, because it doesn't appear "spontaneously" on the "Trusted Root Certifications Authority" sessions. Well, i've seen that i can import the certificate under there, also, but... is it working ? ;-) Some info: My "test environment" is composed on a Win 2003 machine who has Active Directory, IIS, CA Authority and everything. The domain is TESTDOMAIN.LOCAL , does it affect the whole thing ? Should i call it TESTDOMAIN.NET ? (TESTDOMAIN.NET is already an internet domain valid and mapped on the DNS service running on that Win 2003 machine). The ISA box is still a Win 2000 server with only ISA running. The ISA computer is a member of "WORKGROUP", i mean it's not a domain member, it's a pure stand-alone server. Does it affect the communications between the certificate on ISA and the CA on the Win2003 server? Should i make it as a Win2003 domain member ? Thank You very VERY much ! Danny