Outbound traffic problem SBS (Std) server and all clients only

Posted on 2006-05-10
Medium Priority
Last Modified: 2010-04-19

We have an issue where most outbound internet traffic on our ADSL connection times out and fails.  Inbound traffic is fine.  The tests I have done are using SMTP, FTP and HTTP.  Small emails seems to be OK so am guessing it's about the 2-3KB size where things start to go wrong.  All traffic goes straight out through a router running NAT ie not through the server.  All PC's and the server are pretty much patched up to date.  Here's the strange bit:  It only affects the SBS 2003 server and any clients attached ie if I connect a non-domain member it works fine.  Have checked out SBS policies (all standard) and cannot see anything that might be causing this.  Have tried another ADSL router and no joy.  Have tried stopping the Windows Firewall/ICS service on the XP Pro clients with and no different.

Am running out of ideas so thought I would post the issue here.

Thanks in advance for your help.

Question by:darrentodd

Author Comment

ID: 16647575

Found the problem was with the ISP.  After a few hours or troubleshooting they had to completely reprogram the ADSL port at the exchange to fix things.  Very odd problem according to the comm's guy.


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