Greylist

smf-grey is a Sendmail milter that implements the GreyList Anti SPAM technology. This technology can significantly reduce the amount of SPAM and viruses going from zombie computers (infected Windows PC), which produce more than 80% of SPAM. GreyList Sendmail milter has a very effective...

Fast Greylist daemon as a Postfix Access Policy Delegation Service with a variable extendable rule set. The rules are used for whitelisting, blacklisting and greylisting based on information from the SMTP dialog on a 'per delivery attempt' basis.

greyd is a transparent Greylist proxy for the purpose of rejecting spam send by spambot armies. The first generation of code which has been running in production for about 3 months has greatly reduced the amount of spam that needs to be processed by conventional anti-spam techniques. History...


Platforms: *nix

JEP(S) brings the control over your mail system back to you with a combination of proven technologies and new thinking. Its very effective greylisting implementation alone can block up to 98% of all spam before it even gets inside your mail system and with this reduce the overall system load....


Platforms: Windows

Spey is a smart SMTP proxy that provides an easy way to add greylisting to your mail setup. This can dramatically reduce the amount of spam you get, which is generally considered to be a Good Thing. Spey is very simple to set up, efficient to use, and extremely effective. Why use Spey?...


Platforms: *nix

sgwi is a web-interface to SQLGrey (SQLGrey is a greylister for Postfix). This web-interface enables you to edit the white- and blacklists as well as the current state of the greylist. Installation: - put the files somewhere in your website - make sure you shield things with a .htaccess...


Platforms: *nix

Mailismus is a high-speed, high-volume mailserver, which can be used as an outgoing SMTP server, an MX secondary, or as a distribution point for incoming mail. It is secure, highly configurable, provides numerous anti-spam measures (eg. blacklisting and greylisting, DNS-based address validation)...


Platforms: Windows, Java, Linux, Unix

Qmail-Scanner is an add-on that enables a Qmail email server to scan gatewayed email for certain characteristics (i.e. a content scanner).It is typically used for its anti-virus and anti-spam protection functions, in which case it is used in conjunction with external scanners. It also enables a...


Platforms: CGI and Perl

A simple SMTP mail server and client written with spam blocking in mind Postoffice is a simple SMTP mail server and client written with spam blocking in mind. The project provides a greylist to slow down the rate of incoming spam, and can be configured to do antivirus checking on incoming mail...


Platforms: *nix

sgwi is a web-interface to SQLGrey (SQLGrey is a greylister for Postfix).This web-interface enables you to edit the white- and blacklists as well as the current state of the greylist.


Platforms: *nix