afew

Initial tagging script for Notmuch

amavisd-milter

sendmail milter for amavisd-new

amavisd-new

High-performance interface between the MTA and content checkers

anubis

GNU Anubis is an outgoing mail processor

ask

Active Spam Killer: A program to filter spam

bmf

A fast and small Bayesian spam filter

bogofilter

Bayesian spam filter designed with fast algorithms, and tuned for speed

clamassassin

Simple spamassassin-like script for virus scanning and filtering e-mail messages

clamsmtp

An SMTP filter to check for viruses using the ClamAV anti-virus software

couriersrs

SRS (Sender Rewriting Scheme) wrapper for the courier MTA

dcc

Distributed Checksum Clearinghouse

disspam

A Perl script that removes spam from POP3 mailboxes based on RBLs

dkimproxy

An SMTP proxy server for adding DKIM headers

dovecot-antispam

A dovecot antispam plugin supporting multiple backends

dovecot_deleted_to_trash

Deleted to trash IMAP plugin for Dovecot

dspam

A statistical-algorithmic hybrid anti-spam filter

exim-geoip

This is an IPv4 and IPv6 capable GeoIP dlfunc library for Exim

exim-p0f

This is p0f version 3 dlfunc library for Exim

gld

A standalone anti-spam greylisting algorithm on top of Postfix

imapfilter

An IMAP mail filtering utility

libdkim

DomainKeys Identified Mail library from Alt-N Inc

libmilter

The Sendmail Filter API (Milter)

libsieve

A library for parsing, sorting and filtering your mail

libspf2

libspf2 implements the Sender Policy Framework, a part of the SPF/SRS protocols

libsrs2

libsrs2 is the next generation Sender Rewriting Scheme library

libsrs_alt

Sender Rewriting Scheme library

maildrop

Mail delivery agent/filter

mailfilter

Mailfilter is a utility to get rid of unwanted spam mails

MailScanner

Free Anti-Virus and Anti-Spam Filter

Manifest.gz

mapson

A challenge/response-based white-list spam filter

milter-regex

A milter-based regular expression filter

mimedefang

Antispam, antivirus and other customizable filters for MTAs with Milter support

normalizemime

Helper program to normalize MIME encoded messages

opendkim

A milter-based application to provide DKIM signing and verification

opendmarc

Open source DMARC implementation

opensmtpd-extras

Extra tables, filters, and various other addons for OpenSMTPD

policyd

Policy daemon for postfix and other MTAs

policyd-weight

Weighted Policy daemon for Postfix

popfile

Anti-spam bayesian filter

postforward

Postfix Sender Rewriting Scheme forwarding agent

postfwd

Versatile Postfix policy server with a flexible ruleset based configuration

postgrey

Postgrey is a Postfix policy server implementing greylisting

postsrsd

Postfix Sender Rewriting Scheme daemon

procmail

Mail delivery agent/filter

procmail-lib

Procmail Module Library is a collection of modules for Procmail

pypolicyd-spf

Python-based policy daemon for Postfix SPF verification

razor

Distributed, collaborative spam detection and filtering network

rblcheck

Perform lookups in RBL-styles services

rmilter

Another sendmail milter for different mail checks

rspamd

Rapid spam filtering system

scmail

a mail filter written in Scheme

sid-milter

A milter-based application to provide Sender-ID verification service

sieve-connect

Sieve Command Line Interface

sigh

S/MIME signing milter

spamass-milter

A milter for SpamAssassin

spamassassin

An extensible mail filter which can identify and tag spam

spamassassin-botnet

SpamAssassin plugin that attempts to detect messages sent by a botnet

spambayes

An anti-spam filter using on Bayesian filtering

spamdyke

A drop-in connection-time spam filter for qmail

spampd

spampd is a program to scan messages for Unsolicited Commercial E-mail content

spamprobe

Fast, intelligent, automatic spam detector using Bayesian analysis

sqlgrey

SQLgrey is a postfix policy service implementing a grey-listing policy

tmda

Python-based SPAM reduction system

zdkimfilter

DKIM filter for Courier-MTA

afew

libsieve

procmail

amavisd-milter

libspf2

procmail-lib

amavisd-new

libsrs2

pypolicyd-spf

anubis

libsrs_alt

razor

ask

maildrop

rblcheck

bmf

mailfilter

rmilter

bogofilter

MailScanner

rspamd

clamassassin

Manifest.gz

scmail

clamsmtp

mapson

sid-milter

couriersrs

milter-regex

sieve-connect

dcc

mimedefang

sigh

disspam

normalizemime

spamass-milter

dkimproxy

opendkim

spamassassin

dovecot-antispam

opendmarc

spamassassin-botnet

dovecot_deleted_to_trash

opensmtpd-extras

spambayes

dspam

policyd

spamdyke

exim-geoip

policyd-weight

spampd

exim-p0f

popfile

spamprobe

gld

postforward

sqlgrey

imapfilter

postfwd

tmda

libdkim

postgrey

zdkimfilter

libmilter

postsrsd