[2018.07.27] 01:24:26 [24511] Exception: Object reference not set to an instance of an object.
[2018.07.27]    at RelayServer.SpoolMessage.get_SpamHeaderValue()   at RelayServer.SpamAnalyzer.GetSpamWeight(SpoolMessage spoolMessage, LocalRecipient localRecipient, Boolean& isSenderWhiteListed, String& reasonForZero, Boolean& failedDkim, Boolean& failedSpf)   at RelayServer.DeliveryManager.#IEb(SpoolMessage #Nrb, LocalRecipient #w5i, Boolean& #A5i)   at RelayServer.DeliveryManager.#UBb(SpoolMessage #Nrb, LocalRecipient #w5i)   at RelayServer.MessageQueue.LocalDeliveryQueue.#SBb(SpoolMessage #Nrb)01:24:26 [24511] Removed from LocalDeliveryQueue (0 queued or processing)