Undeliverable mail: Returned mail: see transcript for details

[<MAILER-DAEMON@k66.ru>]

Failed to deliver to 'ipsec-approval@neptune.tis.com'
SMTP module(domain @87.224.128.21:neptune.tis.com) reports:
 host name is unknown

Reporting-MTA: dns; k66.ru

Original-Recipient: rfc822;<ipsec-approval@neptune.tis.com>
Final-Recipient: rfc822;<ipsec-approval@neptune.tis.com>
Action: failed
Status: 5.0.0
Received: from [87.224.159.224] (HELO ths.kth.se)
  by k66.ru (CommuniGate Pro SMTP 4.3.10)
  with ESMTP id 9951549 for ipsec-approval@neptune.tis.com; Sat, 08 Jul 2006 10:12:33 +0600
From: kf-web-archive@ths.kth.se
To: ipsec-approval@neptune.tis.com
Subject: Returned mail: see transcript for details
Date: Sat, 8 Jul 2006 10:18:16 +0600
MIME-Version: 1.0
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_0000_B36420AD.091B826B"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2600.0000
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
Message-ID: <auto-000009951549@k66.ru>