Undeliverable mail: Delivery reports about your e-mail

[<MAILER-DAEMON@rzdb.ru>]

Failed to deliver to 'npercoco@exault.net'
SMTP module(domain exault.net) reports:
 host mx01.1and1.com says:
 550 <npercoco@exault.net>: invalid address

Reporting-MTA: dns; rzdb.ru

Original-Recipient: rfc822;<npercoco@exault.net>
Final-Recipient: rfc822;<npercoco@exault.net>
Action: failed
Status: 5.0.0
Received: from [62.118.235.178] (HELO ths.kth.se)
  by rzdb.ru (CommuniGate Pro SMTP 5.1c.4)
  with SMTP id 13126 for npercoco@exault.net; Tue, 14 Nov 2006 17:36:16 +0300
From: kf-web-archive@ths.kth.se
To: npercoco@exault.net
Subject: Delivery reports about your e-mail
Date: Tue, 14 Nov 2006 16:28:35 +0300
MIME-Version: 1.0
Content-Type: multipart/mixed;
	boundary="----=_NextPart_000_0011_92CA290A.90204F70"
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-000000013126@rzdb.ru>