Exchange 2010 traffic high by port 443 RRS feed

  • Question

  • I'm experiencing a high traffic utilizations between our exchange servers 2010 these few days with port 443. we are not sure what it was replicating but it was using a very high traffic. Seems like all Exchange in our infra are using port 443 to this Exchange in China. Any help on this? Thanks.

    Monday, June 19, 2017 8:18 AM

All replies

  • Perhaps a one server is acting proxy for transactions to the other.  Please feel free to examine the IIS logs to see if you might get a clue about what the traffic is.

    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Celebrating 20 years of providing Exchange peer support!

    Thursday, June 29, 2017 9:44 PM
  • Hi Thim Yew,

    In Exchange 2010 IIS logs on the CAS contain all user connections on port 443.

    Check the IIS log in IIS manager, follow these steps:

    Enter the address above in “This PC” of CAS, open an IIS log.

    Check the Fields in the log, such as: cs-method, s-port, and cs-username, like this:


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    Manu Meng
    TechNet Community Support

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    Friday, June 30, 2017 8:14 AM