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| Tech Update Networking Upgrades |
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Spam-blockers hall of fame
Services
September 19, 2002

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The following services block spam before it reaches your mail servers.
Activis e:)scan
Notable features: Filters e-mail before it arrives at company network. Virus protection.
BrightMail Anti-Spam
Notable features: Samples spam sent to over 100 million e-mail addresses. Staff push spam-blocking rules to dedicated servers at your site. Web-based interface. Anti-virus available.
eDoxs XP4
Notable features: Uses BrightMail engine to filter mail based on content rules and provide anti-virus protect via Symantec's Anti Virus Research Center.
Habeas
Notable features: Uses licensed set of headers to guarantee that sent e-mail is not spam.
MessageLabs SkyScan AS
Notable features: Spam can be blocked or sent to a system administrator. Via the Web-based management interface you can select which IP addresses, domain names, and specific e-mail addresses to block. Uses a combination of public and internal company white and blacklists.
| [an error occurred while processing this directive] | at sent e-mail is not spam.
MessageLabs SkyScan AS
Notable features: Spam can be blocked or sent to a system administrator. Via the Web-based management interface you can select which IP addresses, domain names, and specific e-mail addresses to block. Uses a combination of public and internal company white and blacklists.
Postini Junk Email Assistant
Notable features: SMTP statistics. Systemwide alerts. Real-time heuristic content analysis. Centralized management of applications. No hardware or software installed at your site.
Singlefin Email Gateway Services
Notable features: Automatic filtering to separate inbox. Web-based control panel. Message backup. Virus protection via Sophos and Trend Micro. No hardware or software required at your site.
Syntegra eMail Sentinel
Notable features: Works with any SMTP messaging server. Sendmail-based SMTP router. Centralized server-based tools that protect against Internet spam attacks. Web administration tools. Statistical analysis filtering process.
Unitedmessaging messagecontrol
Notable features: Automatic filters for Reverse DNS, MAPS RBS, MAPS DUL, and MAPS RSS. Rules applied to outbound and inbound messaging.
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