Greylisting

Greylisting policy daemon for Postfix, written in Python, with SQL support

Postfix greylisting policy service with auto-white-listing written in Perl with SQL database as storage backend. Greylisting stops 50 to 90 % junk mails (spam and virus) before they reach your Postfix server (saves BW, user time and CPU time).

SMTP Preprocessor is advanced tool for mail administrators. It enhances functionality of corporate mail server. The program receives SMTP messages before corporate SMTP server, on-the-fly changes or rejects them, and retransmits result to the server. Wide range of settings allows to improve...


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

SQLgrey is a Postfix greylisting policy service with auto- whitelisting and an SQL database as storage backend. The project is based on postgrey, refining auto-whitelisting and storing whitelists and connection attempts in a database. Its goal is reducing the amount of spam reaching user...


Platforms: *nix

Gld is a standalone greylisting server for Postfix. Gld project listen on a TCP port and uses MySQL for storing data. The server supports whitelists based on sender, sender_domain, and client_ip. It also supports light greylisting and DNS white lists..


Platforms: *nix

Policy Daemon project is an anti-spam plugin for Postfix (written in C) that does Greylisting, Sender-(envelope, SASL or host / ip)-based throttling (on messages and/or volume per defined time unit), Recipient rate limiting, Spamtrap monitoring / blacklisting, HELO auto blacklisting and HELO...


Platforms: *nix

SMC anti-spam e-mail milter (plug-in) is an software application designed to significantly reduce the amount of SPAM/UCE (junk-mail) you receive. SMC uses a greylisting like technique to stops the junk-mail and a set of dynamic auto "whitelists" for unknown, but legitimate senders.


Platforms: Linux, Unix, FreeBSD

The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, Bayesian, Greylisting and multiple filter methods. Click 'Browse all files' to download the professional version 2.1.1 build 12090.


Platforms: Windows, Mac, Linux

A greylisting daemon for Postfix, using PostgreSQL, with support for IPv6


Platforms: Mac, BSD, Linux

maRBL project is a policy daemon for Postfix that lets you trigger any Postfix action as a result of an RBL match. There are only a couple good, practical options for spam filtering, but none of them are 100% effective. Statistical filters can come very close to perfection, but at the cost of...


Platforms: *nix

Coherent Mail Gateway is intended to be a very easy to set up MTA using SMTP and POP3. Greylisting is used on the SMTP daemon to reduce spam. In addition, quite a lot of checks on the validity of information from the SMTP client (such as claimed server name and sender) are carried out, and...


Platforms: *nix

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.


Platforms: Windows, Mac, Linux

homepage can prevent email address harvesters and comment spammers from visiting your site by using a centralized DNS blacklist.Features - homepage lookups for visitor IPs - Blocking of requests coming from blacklisted IPs - Database caching, decreasing the number of DNS lookups - Honeypot link...


Platforms: Windows, Mac, *nix, PHP, BSD Solaris

SQLgrey is a postfix policy service implementing a grey-listing policy. It is written in Perl and uses DBI to access an SQL database.Its goal is reducing the SPAM reaching user mailboxes.SQLgrey gained the following features since the beginning:- SQLgrey can withstand a database crash...


Platforms: CGI and Perl