glhs -> slow OWA-- isapi filter message, https failed in logs (17.Jan.2006 10:54:11 PM)
I'm in the process of implementing ISA Enterprise 2004 running in parallel to our existing 2004 Std installation and am setting up our OWA rules which are functioning but the OWA response is extremely slow. Both installations are running on Windows 2003 Server on very capable new hardware with 2 teamed nics.
Upon watching the logs while trying to access the site I recieve a mix of success and failure messages.
The one I am suspecting to be at fault has the following text:
Failed Connection Attempt
Http Status Code:
12210 An Internet Server API (ISAPI) filter has finished handling the request. Contact your system administrator.
Log Record Type:
Web Proxy Filter
Like I mentioned, the site works correctly, although is quite slow. Our other ISA Standard site is configured the same and works quite quickly. Caching is disabled on both. The only two rules in place on the ISA are a HTTP rule to direct the user first to a non-SSL disclaimer page then a HTTPS rule for the actual OWA forms based login.
Does anyone know what causes this ISAPI filter message or how else to troubleshoot why it is slowing things down?
Any help would be much appreciated.