Subject: Undeliverable mail: Заявку на обучение по Финансовому анализу подтверждаем

From: [email-masked]
Date: Fri, 22 Aug 2008 04:55:07 +0400

Failed to deliver to [email-masked]'
SMTP module(domain @81.88.115.4:ratelecom.ru) reports:
 DNS Loop: MX-record mailserver.ratelecom.net points back to us