Sorry - no workaround. The Entourage app doesn't actually play right with HTTP connections. It expects a specific series of request/responses and loses its tiny little mind if that fails to happen. From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Sent: Wednesday, February 21, 2007 7:52 PM To: isalist@xxxxxxxxxxxxx Subject: [isalist] owa forms with authentencation with exchange 2003 and ise 2004 All, I have isa 2004 edge firewall using ssl owa rules for OWA. My problem is I have macintosh users using entourage connecting using the https://domain.com/exchange when i enable forms authentication the mac users fail to authenticate. Does anyone know a workaround for this? There is an article on Microsoft's site that states using a front end exchange server as one of them. Can I use forms behind the isa on the exchange box? Thanks Jim All mail to and from this domain is GFI-scanned.