MSExchangeApplicationLogic Event 3018

Hi,

Running Exchange Server 2013 CU3 Standard.

This is an unusual issue which has been bugging me since setting up this system. The event log is frequently producing this error although other log entries imply that MSExchangeApplicationLogic is operational.

Log Name:      Application
Source:        MSExchangeApplicationLogic
Date:          19/02/2014 15:07:31
Event ID:      3018
Task Category: Extension
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      server.contoso.com
Description:
Scenario: GetConfig.GetConfig. The request failed. Mailbox:  Url: https://o15.officeredir.microsoft.com/r/rlidMktplcWSConfig15 Exception: System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 65.55.69.140:443
   at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at Microsoft.Exchange.Data.ApplicationLogic.Extension.BaseAsyncOmexCommand.<>c__DisplayClass2.<EndGetResponseCallback>b__1()

The other server of a pair is showing no such errors.

Does anyone have any experience of dealing with this?

Cheers, Nick C