This is a delivery status notification, automatically generated by MTA emea-hub.yr.com on Tue, 29 Jul 2008 22:50:58 0100 Regarding recipient(s) : lsat.yucel(a)tr.mecglobal.com Delivery status : Failed. Message could not be delivered to domain <tr.mecglobal.com> .Failed while initiating the protocol. <[(&#39;lsat.yucel(a)tr.mecglobal.com&#39;, 550, 'lsat.yucel@tr.mecglobal.com... No such user')]> MTA Response :550 The original message headers are included as attachment.