This is a delivery status notification, automatically generated by MTA mx1.allianse.no on Fri, 17 Oct 2008 19:01:15 +0200 Regarding recipient(s) : post(a)connexnorge.no Delivery status : Failed. Message could not be delivered to domain <connexnorge.no> .Failed while initiating the protocol. <[(&#39;post(a)connexnorge.no&#39;, 550, '5.1.1 Unknown user.')]> MTA Response :550 The original message headers are included as attachment.