2017-03-27 09:28:29.47 Logging (2 Error) Exchange Mailbox Service: Error retrieving mail items: Microsoft.Exchange.WebServices.Data.ServiceRequestException: The request failed. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.; Microsoft.Exchange.WebServices.Data.ServiceRequestException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.; Microsoft.Exchange.WebServices.Data.ServiceRequestException: The remote certificate is invalid according to the validation procedure.;    at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(HttpWebRequest request)
   at Microsoft.Exchange.WebServices.Data.SimpleServiceRequestBase.InternalExecute()
   at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest`1.Execute()
   at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems[TItem](IEnumerable`1 parentFolderIds, SearchFilter searchFilter, String queryString, ViewBase view, Grouping groupBy, ServiceErrorHandling errorHandlingMode)
   at Microsoft.Exchange.WebServices.Data.ExchangeService.FindItems(FolderId parentFolderId, ItemView view)
   at Mtg.Logbinder.Exchange.ExchangeMailboxService.‍‌​‫‏‍‪‫‏‏‫‎​‎‫(ExchangeService , FolderId , ItemView )
   at Mtg.Logbinder.Exchange.ExchangeMailboxService.‪‪‍‫‫‏‫‪‌‍‫‏​‎‫
 
This is where the event processors stops.

Please note that Exchange version is 2016 and the server we are using to install logbinder EX is a 2012 server and the 2012 server does not have any exchange software installed.

The error message indicates that there is a certificate error. You can test it by opening in Internet Explorer (on the server where LOGbinder for Exchange is installed) the Exchange URL that you specified in the LOGbinder for Exchange input. It should open without a certificate error.

This certificate error often occurs when a self-signed certificate is used. Please add the certificate to the trusted root store solve the certificate error.

Also note that because of limitation imposed to Exchange 2016 auditing, LOGbinder currently does not support Exchange 2016.

Thanks, I will check and get back to you :-)