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Exchange 2013 dragging network and internet down

Posted on 2014-07-24
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Last Modified: 2014-07-29
We are in the middle of transitioning from exchange 2007 to 2013.

Since moving the users Exchange 2013 is now dragging the network down and sending a lot of traffic to our bluecoat proxy  (Seen in wire shark) which is crawling  the internet to a halt. Disconnecting the server from the network confirms it is this server which is causing the issue (the internet starts to respond again) and stopping the RPC Client access service also seems to resolve the issue.

Any ideas please?
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Question by:robquartzelec
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by:Simon Butler (Sembee)
ID: 40217625
Everything in Exchange 2013 is web based.
Therefore my instinct is that you don't have the correct exclusions in place in your proxy configuration and all of the traffic is being routed via the proxy.
Stopping Exchange stops the traffic because the client can no longer connect, so goes in to offline mode. I doubt if the traffic originates from the Exchange server.

Simon.
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by:robquartzelec
ID: 40217710
Internally shouldn't they just talk straight to the server though http?

On the Exchange there are 100s of connections going outbound to the proxy, again should these not be internal as the clients are internal?
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Simon Butler (Sembee) earned 500 total points
ID: 40218108
They should.
However if you don't have your proxy configuration correct, then all traffic will go to the proxy.
You need to ensure that there are exclusions configured to push the traffic direct.
If you don't have exclusions in, then the traffic will go to the server list as the proxy host.

Simon.
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Author Comment

by:robquartzelec
ID: 40226441
Hi Simon,

Thanks for the info you led us to the problem! thanks!
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