Delivery Status Notification (Failure)

["Mail Delivery System" <MAILER-DAEMON@xxxxxxxxxxxxxxxxxxxxxxxxx>]

The following message to <rhino@xxxxxxxxxxxxxxxx> was undeliverable.
The reason for the problem:
5.1.0 - Unknown address error 550-'5.1.1 Recipient unknown'

Reporting-MTA: dns; ironportin-vas-2.it.gu.se

Final-Recipient: rfc822;rhino@odontologi.gu.se
Action: failed
Status: 5.0.0 (permanent failure)
Remote-MTA: dns; [130.241.151.36]
Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'5.1.1 Recipient 
unknown' (delivery attempts: 0)

--- Begin Message ---

To:	<rhino@xxxxxxxxxxxxxxxx>
Subject:	November 70% OFF
From:	VIAGRA ® Official Site <rhino@xxxxxxxxxxxxxxxx>
Importance:	High

--- End Message ---