Your message could not be sent. A transcript of the attempts to send the message follows. The number of attempts made: 1 Addressed To: cher10ea.renova.mskva at renova.ru Tue, 17 Jul 2007 08:49:12 +0400 Failed to send to identified host, cher10ea.renova.mskva at renova.ru: [10.1.2.43], 550 5.1.1 User unknown --- Message non-deliverable.