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Anti-Spam Server Software (33)
Procmail (6)
SpamAssassin (9)
Windows (40)
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  Sender Policy Framework (SPF) http://www.openspf.org/
Framework for publishing information through DNS describing a list of ip addresses allowed to send emails from a specific domain.
  Spam Cop http://spamcop.net/
Spam reporting service.
  http://www.habeas.com/ http://www.habeas.com/
Focuses on identifying, classifying, tagging and monitoring legitimate email.
  Sophos PureMessage http://www.sophos.com/products/pm/?_x=3
Email management solution that provides full control over security and usage of corporate email systems.
  Vipul's Razor http://razor.sourceforge.net/
Collaborative spam filtering network allowing users to report and filter out matching spam.
  Distributed Checksum Clearinghouse http://www.rhyolite.com/anti-spam/dcc/
System of clients and servers that collect and count checksums of email messages in order to detect and filter bulk UCE.
  SpamStopsHere http://www.spamstopshere.com/
An email filtering service for businesses or individual domains. 30 day trial offered.
  Mailshell http://mailshell.com/mail/client/fd.html
Offers protection against spam, combined with personalization and privacy for individual email users.
  Spam Arrest, LLC http://spamarrest.com
POP3 service that blocks spam using sender verification methods.
  0Spam.com http://www.0spam.com
Free antispam service for pop, Yahoo, and Hotmail accounts supporting multiple languages.
  Mailcleaner http://www.mailcleaner.net/index.html
Swiss company offering e-mail and viruses filtering at the server level.
  E-Mail Magician http://www.yav.com/yav/emailmagician.html
Automates filter, mailbox, and nickname creation for Eudora Macintosh. Filters on more than 1,000 spam characteristics.
  http://www.mxlogic.com/ http://www.mxlogic.com/
Protects your entire domain from spam and viruses. No software to install or maintain.
  Email Systems http://www.emailsystems.com/
Fully managed service which filters viruses, worms and malicious macros and spam. Firm with offices in UK, France and Sweden.
  CruelMail http://www.cruelmail.com/cgi-bin/main.cgi
Provides spam-proof email accounts. Only allows email from addresses in whitelist. Charges a fee for others to reach the customer's mailbox.
  CleanMyMailbox http://www.cleanmymailbox.com/
Whitelist-based service that automatically "cleans" mailboxes of unwanted email multiple times per hour.
  SpamButcher http://www.spambutcher.com
Fuzzy-logic software based anti-spam filter for Windows systems.
  Spam Manager Professional http://www.eontech.com/spammgr
Spam Manager Professional is a windows based gateway filter for SMTP email servers. This filter uses DNSBL Servers to reject junk or spam mail coming from blacklisted servers.
  http://assp.sourceforge.net/ http://assp.sourceforge.net/
Anti-Spam SMTP Proxy implementing platform independent email filtering services.
  Katharion http://www.katharion.com
Provides spam and virus filtering services that keep unwanted mail off the network.
  SpamTrap http://www.spamtrap.net.au
Australian POP3 email spam filtering service requiring no software.
  RMX - SMTP anti-forgery protocol http://www.danisch.de/work/security/antispam.html
Filtering protocol verifying the sender address through authorization records made available in DNS to prevent address forgery.
  AppRiver Spam Filtering http://www.appriver.com/
An email security company offering hosted spam and virus protection and a scanning engine especially for OEMs.
  Spam Soap http://www.spamsoap.com/
Managed spam service featuring message store/forward, message archiving, and administration at both end user and domain levels.
  MailPolice http://www.mailpolice.com
Managed mail service with parental controls, POP/IMAP and Webmail.
  http://clapf.acts.hu/ http://clapf.acts.hu/
An open source email content filter application. Clapf is a modular statistical antispam application with an interface to popular antivirus programs.
  NuXo Technologies http://www.nuxo.com
Provides redundant managed email filtering services: protection against spam, virus and failure without changes to the existing installation.
  Email Solutions http://www.e-mailsolutions.net
UK firm specializing in hosted spam and virus protection through MX redirection. Subscription based. A 30 day free trial is offered.
  Activator Mail http://www.activatormail.com
Virus scanning and spam prevention based on blacklists and user feedback.
  The Spam Eater http://spameater.com/
Checks your existing POP3 email account every ten minutes and filters spam and viruses. A 30 day free trial is offered.
  Red Condor http://www.redcondor.com
Stops spam before it reaches your network. Managed spam filtering service blocks spam, viruses, spyware, and phishing schemes. A 30 day free trial is offered.
  Mailprotector http://www.mailprotector.com.au
Hosted Spam filtering service. 30 day trial. No hardware, no software required. Also offers POP3, web and Exchange hosting.
  MX Police http://www.mxpolice.com
Managed anti-spam, virus and malware protection.
  http://www.bopspam.co.uk http://www.bopspam.co.uk
Online POP3 bayesian filtering service.
  The Email Laundry http://www.theemaillaundry.com
Spam filtering service to block spam and viruses by domain.
  Securence http://www.securence.com/index.htm
Managed spam service offering Anti Spam and Anti Virus filtering technologies.
  Remote Anti Spam http://www.remoteantispam.com
A hosted anti spam filtering service providing simple, anti spam, phishing and virus protection.
  MailArmory http://www.mailarmory.com
Spam and virus defense for businesses and service providers.
  SpamFilter for ISP http://www.logsat.com/spamfilter/
Proxy software for incoming mail.
  http://www.fakemx.org/ http://www.fakemx.org/
Providing a service to temporarily reject mail directed at low priority servers.
  Spam Filtering for Mail Exchangers http://tldp.org/HOWTO/html_single/Spam-Filtering-for-MX/
Document offers detailed discussion on how to filter junk mail in incoming SMTP transactions.
  http://www.mxlab.be http://www.mxlab.be
A Belgium based company that blocks virus threats and unwanted emails through MX redirection. Also provides archiving and backup services.
  SpamDrain http://www.spamdrain.net
Swedish company filters individual POP3 and IMAP accounts as well as entire domains. No software installations required. Offers a 30-day trial.
  MailShield http://www.mailshield.com.au
Australian company offers a managed service with protection from viruses, spam, malware, phishing and unwanted content.
  MIMEShield http://www.gessworks.com/WebSite.nsf/page/mimeshield
Runs as Domino server task, No template customizations, supports blacklists/whitelists, Spam email categorization, Electronic fingerprinting, Supports multiple Maps/RBL blacklists, Auto whitelist generation on outbound SMTP traffic.
  Peer-to-Peer http://www.peertopeer.net/
Anti-Spam gateway which filters out spam and viruses for an entire domain. A 30-day free trial is offered.
  Messagecleaner http://www.messagecleaner.co.uk
Remove viruses and spam mail before they reach your computer.
  CTScleanmail http://www.ctscleanmail.com
Managed enterprise quality spam and virus filtering service.
  http://www.soda3.com http://www.soda3.com
Mobile email filtering service for POP3. Filters your view of your mailbox so you only see email from important senders on your mobile device.
  MX Force http://www.mxforce.com
Enables VARs, OEMs, and ISPs to provide world-class managed email security services.
  Online Spam Solutions http://onlinespamsolutions.com
Managed spam blocker and filtering service for small businesses. Blocks spam and viruses through MX redirection. A 30 day free trial is offered.
  Realmailonly http://www.realmailonly.com
Email Spam filtering service for businesses. Mailboxes available.
  Spam Safe Mail http://www.spamsafemail.com/
Network email scanning and filtering service that removes junk emails at the network level before they are delivered to your mailbox.
  SpamTrap http://www.spamtrap.us/
Fully-managed antispam solution and antivirus service.
  SpamCerbere http://www.spamcerbere.com/
Offers spam protection that doesn't require any installation. Based on a challenge-response system. Free service.
  CleanMailOnline http://www.cleanmailonline.com
Online Spam and Virus Filtering, filter before mail reaches your computer.
  MailFilterPro http://www.mailfilterpro.com
Web-based spam and virus filtering services for small business.
  Filterspam http://www.filterspam.co.uk/
Spam filter service designed to protect children from junk emails.
  Eliminate Spam http://www.eliminatespam.co.uk/
Services to stop spam, viruses and control web access. Firewall installation and setup to prevent server/network security breaches.
  MailSentry http://www.mailsentry.com.au
Australian company offering a managed service with protection from viruses, spam, malware, phishing and unwanted content.
  Dicontas http://www.dicontas.co.uk/
UK based provider of email filtering, email monitoring and centralized administration services for business users.
  http://pyzor.sourceforge.net/ http://pyzor.sourceforge.net/
Open source collaborative spam filtering system using digests of messages to identify spams.

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