Subject: Undeliverable mail: На Ваш запрос вот информация

From: <[email-masked]>
Date: Wed, 08 Oct 2008 09:21:42 +0400

Failed to deliver to [email-masked]'
SMTP module(domain [10.62.0.16]) reports:
 host 10.62.0.16 says:
 550 [email-masked] unknown user account