I've just completed publishing OWA, following Tom's 5 part articles on how to. Worked like a charm. Thanks Tom. Got this question though.. after step 8 in part 5, you mention about certificate-based user authentication at the OWA web site and refer to your book. Could you tell me what pages please. The other is that Exchange 2003 allows for forms based authentication and compression on pages. Is there any changes required in ISA to allow this.?? Exchange 2k3 is on a seperate w2k3 server. Thanks RajiA Email disclaimer: This email and any attachments are confidential. If you are not the intended recipient, do not copy, disclose or use the contents in any way. If you receive this message in error, please let us know by return email and then destroy the message. Environment Bay of Plenty is not responsible for any changes made to this message and/or any attachments after sending. ****************************************************** This e-mail has been checked for viruses and no viruses were detected.