In the past, when spam mail was in its infancy, simply setting up certain keyword rules on your anti spam exchange server would usually do the trick to block unsolicited mail. However, now that over 75% of Internet email consists of spam, a more complete and realistic solution is required. As a network administrator of an exchange server, you are faced with two options; a ‘Client-Based Solution’ or a ‘Server Based Solution’. A server based anti spam exchange solution is usually more recommendable as it blocks the spam before it reaches your mail server but if you can’t resort to this method then feel free to give client based solutions a go. With the multitude of antispam solutions for Exchange, choosing the anti spam exchange server that’s suited to your network’s present and future needs is no simple task. Here is a list of the top 5 Anti Spam Exchange Server Filters I have come across the internet recently.
1. GFI MailEssentials for Exchange/SMTP
GFI MailEssentials features not one, but two anti-spam engines to give administrators an ultra high spam capture rate out-of-the-box with minimal configuration. Not only does it have one of the highest spam capture rates in the industry, over 99%, but it is also the market leader for reducing false positives and ships at the best price available.
2. SecurityGateway for Exchange / SMTP Servers
SecurityGateway Email Spam Firewall for Exchange/SMTP Servers provides affordable inbound and outbound email security with a powerful spam filter that serves as a Microsoft Exchange or SMTP firewall. Its multiple analysis tools separate threats from legitimate email, while leveraging proven anti-spam, anti-virus, anti-phishing, and anti-spoofing technologies to produce a 99% spam blocking rate and achieve nearly zero false-positive results.
3. XWall for Microsoft Exchange
Works with: Every version of Exchange server including
Exchange 2000/2003/2007, SBS 2000/2003 and Exchange 5.5; Any SMTP server like IMail, Lotus Notes and Novell GroupWise; Junk-E-Mail Folder of Exchange 2003/2007 using XWALLFilter event sink
Dial-up, dial-up routers, ADSL and leased-line connections to the Internet; Spam Detection using: Multi Real-time Blackhole List - RBL / SLS / SPAM database; Greylisting spam filter; SURBL - Spam URI Real-time Blocklists - www.surbl.org; Bayesian pattern filter; SPF - Sender Permitted From - Sender Policy Framework; Sender ID Central Checksum Service (CCS) bulk e-mail detection; Heuristic spam filter; Phishing filter; Image spam filter and much more!
4. Spam Titan ISO
SpamTitan software allows you to create an email appliance for your gateway offering protection from Viruses, Spam, Malware, Phishing and unwanted content.
5. Trend Micro ScanMail for Microsoft Exchange
Trend Micro ScanMail for Microsoft Exchange guards against viruses, Trojans, worms, and other malicious code hidden in email attachments. By filtering inbound/outbound SMTP connector-level traffic, it blocks threats before they can enter or leave the mail server. For additional security, Trend Micro ScanMail Suite for Microsoft Exchange combines virus protection with new anti-spam and advanced content filtering technology. A centralized management console makes it easy to deploy group configurations, scan settings, notifications, and automatic updates—across all Exchange servers.
From: http://howtofixcomputerproblems.com/computer-tips/top-5-anti-spam-exchange-server-software/
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