Backend Exchange Server sending packets to FrontEnd Server Causing High Bandwidth

Posted on 2009-03-30
Medium Priority
Last Modified: 2012-08-13
The problem that we're having is that one of our backend exchange
server is constantly sending out HTTP packets to our frontend exchange
server over the tunnel to our main office and these packets are
causing high bandwidth across the tunnel, which is causing other
issues with our internet, and other network connections to the
main office. This is only happening to this one exchange server and not to any of our other backend exchange servers
Question by:bdalton731
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LVL 65

Expert Comment

ID: 24035467
Do you know what the packets are?
Could be replication traffic. Could be a user on the frontend server with a large mailbox accessing it live, rather than in cached mode.


Author Comment

ID: 24035560
Thanks for the comment and will check this....If I shutdown IIS on the backend server the traffic is stopped.....From an ethereal capture we are seeing
continuation or non-http traffic from each frame. Any ideas of what would generating this type of traffic?
LVL 65

Expert Comment

ID: 24040017
If the machine is a frontend server, then shutting down IIS basically stops most of its functionality. As for what the traffic could be, I stated that above.


Accepted Solution

bdalton731 earned 0 total points
ID: 24042084
User had send out calendar invitation  with 30 mb attachment...Identified the rogue calendar entry with the attachment and deleted...Everything is back to normal.

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