Tag Archives: Exchange

Active sync issue when published via MS Web Application Proxy

Exchange 2013 CU7

If you are getting this error on the CAS servers

[Eas] The number of outstanding requests for guard TargetBackend(“servername”) has exceeded the max limit 150. Current request will be rejected.

And this error on the Microsoft Web Application Proxy

The HTTP response from the back end server was not received within the expected interval. Expected interval: 300 seconds.

Try

Reference here 

  • On all CAS servers:

    In \Exchange Server\V15\FrontEnd\HttpProxy\sync\web.config, add this key in the <appSettings> node.

    <add key=”HttpProxy.ConcurrencyGuards.TargetBackendLimit” value=”5000″ />

    In \Exchange Server\V15\FrontEnd\HttpProxy\rpc\web.config, add this key in the <appSettings> node.

    <add key=”HttpProxy.ConcurrencyGuards.TargetBackendLimit” value=”5000″ />

    After this change recycle the MSExchangeSyncAppPool and MSExchangeRPCProxyAppPool in IIS manager.

    After this, we stopped getting Event ID 2002, and all Connection_Dropped_Event_List_Full stopped appearing in Httperror logs.

     

Advertisements