isa server errors!!!!!

265 pts.
Tags:
ISA firewall
ISA Server
ISA Server configuration
Hi when I use of isa server for gate way I can't see most of sites and urls specially gmail and yahoo mail sites,when I enter my account and password it takes too long time and finnaly "the page cann't be displayed" from isa!!!!! but when I connected directly to modem every thing is ok!!!!! Here are some warning logs of isa server event viewer log!!!!! could you please help me!!!?? it is very urgent!!! my isa is isa server 2004 version 4.0.3443 Thank you. ---- Regards Mahnaz ---------- Event Type: Warning Event Source: Microsoft ISA Server Web Proxy Event Category: None Event ID: 23002 Date: 4/22/2008 Time: 11:49:23 AM User: N/A Computer: ISA Description: ISA Server was unable to process a response body from http://tags.expo9.exponential.com because the response was compressed by the none method, which is not supported by ISA Server. As a result, the response was discarded. This happens when the server ignores the request from ISA Server for GZIP compression and instead compresses the response with none. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. -------- Event Type: Warning Event Source: Microsoft Firewall Event Category: None Event ID: 21138 Date: 4/22/2008 Time: 11:51:40 AM User: N/A Computer: ISA Description: The connectivity verifier "yahooEmailLogin" reported a slow connection to https://login.yahoo.com/config/login?. The specified connectivity response threshold was 5000 msec, and the monitored response time was 6141 msec. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. ----- Event Type: Warning Event Source: Microsoft Firewall Event Category: None Event ID: 21138 Date: 4/22/2008 Time: 11:49:12 AM User: N/A Computer: ISA Description: The connectivity verifier "yahoo" reported a slow connection to http://www.yahoo.com/r/m6. The specified connectivity response threshold was 5000 msec, and the monitored response time was 8094 msec. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
ASKED: April 22, 2008  8:22 AM

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