Mail Delivery (failure address@hidden) 'This Message was Reject based on File Extension Names'

[postmaster]

The Email with Subject Mail Delivery (failure address@hidden) Contained Files
that are used to send viruses
This message has not been sent

******************** ID:111233 Server: [Relayblock4: 192.168.10.7] 
******************** 

From: "address@hidden" <address@hidden>
To: "address@hidden" <address@hidden>
Subject: Mail Delivery (failure address@hidden)
received: from efx.co.uk ([80.140.66.243]) by email3.bootsit.com with Microsoft 
SMTPSVC(6.0.3790.0); Tue, 6 Apr 2004 07:26:31 +0100
return-path: "address@hidden" <address@hidden>
x-originalarrivaltime: 06 Apr 2004 06:26:31.0776 (UTC) 
FILETIME=[19FA2E00:01C41BA0]
content-transfer-encoding: 7bit
content-classes:message: urn:content-classes:message