Released on: 13, June 2008
, Author: David Kelleher
, Audience: Software related
PRESS RELEASE
For Immediate Release
NDR spam: When non-delivery reports become a nuisance
London, UK, 11 June, 2008 GFI Software, a leading developer of network security, content security and messaging software, has today launched a white paper to explain what NDR spam is all about and why spammers have resorted to this effective method to distribute unsolicited mail.
Research shows that up to 90% of emails received by companies are spam, and spammers have adopted a variety of methods to bypass spam filters used in anti-spam software. In the beginning, spam was mainly text based but over the past few years, spammers have resorted to using embedded images and attaching common file types such as mp3s and Excel documents in emails to gain access to mailboxes. Another option is NDR or non-delivery report spam.
NDRs are a common part of email exchanges. Users receive NDRs, for example, when an email does not arrive at a recipient's address and notification is sent to the sender. However, spammers can cause a considerable increase in NDR activity because they send junk mail to thousands of email addresses. Some are genuine but others are not and these are used to generate NDR messages by manipulating the From' address to use a real domain sender. This results in email users receiving NDRs from people they had never sent an email to in the first place.
Unless action is taken, email servers could be inundated with useless emails thereby hogging system resources and affecting performance. The best way to stop NDR spam is to deploy anti-spam software that can identify spam in NDRs and delete them from the server.
A variety of technologies are used and anti-spam software like GFI MailEssentials, the number 1 anti-spam filter on the market, uses Bayesian Filter, DNS Blacklists, Spam URI RealTime Blocklists and Keyword Checking to keep NDR spam at bay. GFI MailEssentials also uses a Directory Harvesting feature on the email gateway to drop email messages and NDRs sent to non-existent users.
This white paper explains what NDR spam is and how administrators can take effective measures to reduce the impact on their email servers. To download a copy of the white paper, please visit http://www.gfi.com/whitepapers/ndr-spam.pdf.
For information on GFI's anti-spam and anti-phishing solution, GFI MailEssentials, visit http://www.gfi.com/mes/.
About GFI MailEssentials
With over 60 awards to its name, 80,000 satisfied customers and the lowest prices on the market, GFI MailEssentials is an anti spam filter that captures over 98% of spam and, since it is server-based, it eliminates the need to install and update anti spam software on each desktop. GFI MailEssentials uses a variety of technologies to beat the latest spam threats such as Bayesian filtering, white-listing technology and DNS blacklists. GFI not only excels at eliminating spam but this is done at market-leading low rate of false positives ensuring that good and important emails are not deleted. GFI MailEssentials can detect and block phishing emails as well as add email management tools to your mail server: disclaimers, mail monitoring, Internet mail reporting, list server, server-based auto replies and POP3 downloading.
About GFI
GFI is a leading software developer that provides a single source for network administrators to address their network security, content security and messaging needs. With award-winning technology, an aggressive pricing strategy and a strong focus on small-to-medium sized businesses, GFI is able to satisfy the need for business continuity and productivity encountered by organizations on a global scale. Founded in 1992, GFI has offices in Malta, London, Raleigh, Hong Kong and Adelaide which support more than 200,000 installations worldwide. GFI is a channel-focused company with over 10,000 partners throughout the world. GFI is also a Microsoft Gold Certified Partner. More information about GFI can be found at http://www.gfi.com.
All product and company names herein may be trademarks of their respective owners.
For more information:
Please email David Kelleher on dkelleher@gfi.com
GFI Software Ltd - Malta: Tel: +356 21382418; Fax: +356 21382419.
URL: http://www.gfi.com.
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