Exchange pop3 connector service being stopped by fatal error

[1nterpol]

This is probably a longshot but does anyone understand what is happening here? there is no event id as the software is third party(quantum.The problem occurs about every 1 or 2 weeks.


A fatal error occurred.
Details: System.NullReferenceException: Object reference not set to an instance of an object.
at QSS.ExchangeConnector.BusinessLogic.MessageStreamWriter.get_HasValidTerminator()
at QSS.ExchangeConnector.BusinessLogic.Pop3Connection.GetExtendedResponse(Pop3MailMessage message)
at QSS.ExchangeConnector.BusinessLogic.Pop3Connection.SendCommand(String command, Pop3MailMessage message, Int32 retryCount)
at QSS.ExchangeConnector.BusinessLogic.Pop3Connection.GetMessageData(Pop3MailMessage message)
at QSS.ExchangeConnector.BusinessLogic.DeliveryService.DeliverMailToSmtp()
at QSS.ExchangeConnector.Service.MainService.ProcessQueue()
at QSS.ExchangeConnector.Service.MainService.ProcessQueue()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

 

[1nterpol]

I went into services there and set the qss service to restart if it fails, hopefully this gets the mail back up at least when its happens. Will have to wait and see if that works