amavisd-new
- Ebuilds: 2, Stable: 2.13.1, Testing: 2.14.0, 2.13.1 Description: High-performance interface between the MTA and content checkers
Homepage:https://gitlab.com/amavis/amavis License: GPL-2 BSD-2
bmf
- Ebuilds: 1, Stable: 0.9.4-r4, Testing: 0.9.4-r4 Description: Fast and small Bayesian spam filter
Homepage:https://sourceforge.net/projects/bmf/ License: GPL-2
bogofilter
- Ebuilds: 1, Stable: 1.2.5-r1, Testing: 1.2.5-r1 Description:
Bogofilter is a mail filter that classifies mail as spam or ham (non-spam)
by a statistical analysis of the message's header and content (body). The
program is able to learn from the user's classifications and corrections.
Homepage:https://bogofilter.sourceforge.io/ License: GPL-3+
exim-geoip
- Ebuilds: 1, Testing: 0.1-r1 Description: This is an IPv6 capable GeoIP dlfunc library for
Exim. It implements an interface between Exim access control lists and
MaxMind's GeoIP/GeoLite database. This can be useful for greylisting
or scoring IP addresses of SMTP senders according to the country code
of the sender's IP address.
Homepage:https://dist.epipe.com/exim/ License: LGPL-2.1
exim-p0f
- Ebuilds: 1, Testing: 0.1-r1 Description: This is p0f version 3 dlfunc library for Exim.
It implements an interface between Exim access control lists and the
p0f daemon which does passive OS fingerprinting. This can be useful
for greylisting or scoring IP addresses of SMTP senders according to
sender's operating system. This dlfunc supports IPv6.
Homepage:https://dist.epipe.com/exim/ License: LGPL-2.1
gld
- Ebuilds: 1, Stable: 1.7-r4, Testing: 1.7-r4 Description: Standalone anti-spam greylisting algorithm on top of Postfix
Homepage:https://www.gasmi.net/gld.html License: GPL-2
libsieve
- Ebuilds: 1, Stable: 2.2.7, Testing: 2.2.7 Description:
libSieve provides a library to interpret Sieve scripts, and to execute those
scripts over a given set of messages. The return codes from the libSieve
functions let your program know how to handle the message, and then it's up to
you to make it so.
Homepage:http://libsieve.sourceforge.net/ License: MIT LGPL-2.1
libspf2
- Ebuilds: 2, Stable: 1.2.11, Testing: 1.2.11-r1 Description:
libspf2 implements the Sender Policy Framework, a part of the
SPF/SRS protocol pair.
libspf2 is a library which allows email systems such as
Sendmail, Postfix, Exim, Zmailer and MS Exchange to
check SPF records and make sure that the email is authorized by
the domain name that it is coming from. This prevents email
forgery, commonly used by spammers, scammers and email
viruses/worms.
Homepage:https://www.libspf2.net/ License: || ( LGPL-2.1 BSD-2 )
libsrs2
- Ebuilds: 1, Stable: 1.0.18-r1 Description:
libsrs2 is the next generation SRS library from the original designer of
SRS. It implements the Sender Rewriting Scheme, a part of the SPF/SRS
protocol pair. Libsrs2 has been written from an entirely clean codebase with
compliance, speed and versatility in mind. It is platform independent and
has no external dependencies. It is thread-safe and heap-safe, and is
suitable for large scale applications and embedded systems and can operate
without many standard system facilities.
Homepage:https://www.libsrs2.org/ License: GPL-2
mailfilter
- Ebuilds: 1, Stable: 0.8.9, Testing: 0.8.9 Description: Mailfilter is a utility to get rid of unwanted spam mails
Homepage:https://mailfilter.sourceforge.io/ License: GPL-2
milter-regex
- Ebuilds: 1, Stable: 2.7-r3 Description:
milter-regex is a very simple milter-based plugin that rejects or
discards messages matching regular expressions. It doesn't add much
processing overhead, so even a busy mail server can afford to run it.
Homepage:https://www.benzedrine.ch/milter-regex.html License: BSD GPL-2
mimedefang
- Ebuilds: 2, Testing: 3.1 Description:
A program for Milter supported mail servers that implements antispam,
antivirus and other customizable filtering on email messages.
Homepage:https://www.mimedefang.org/ License: GPL-2+
opendkim
- Ebuilds: 3, Stable: 2.10.3-r32, Testing: 2.10.3-r35 Description:
A program implementing the Milter API that signs and verifies
using the DKIM standard. This is a fork of Sendmail's DKIM-milter
Homepage:http://opendkim.org/ License: BSD GPL-2 Sendmail-Open-Source
opendmarc (ambiguous, available in 2 overlays)
- Ebuilds: 4, Stable: 1.4.2, Testing: 1.4.2 Description: Open source DMARC implementation
Homepage:http://www.trusteddomain.org/opendmarc/ License: BSD
policyd
- Ebuilds: 1, Stable: 1.82-r4, Testing: 1.82-r4 Description: Policy daemon for postfix and other MTAs
Homepage:https://wiki.policyd.org License: GPL-2+
policyd-weight
- Ebuilds: 1, Stable: 0.1.15.2-r3, Testing: 0.1.15.2-r3 Description:
policyd-weight is a Perl policy daemon for the Postfix MTA (2.1 and
later) intended to eliminate forged envelope senders and HELOs (i.e. in
bogus mails). It allows you to score DNSBLs (RBL/RHSBL), HELO, MAIL
FROM and client IP addresses before any queuing is done. It allows you
to REJECT messages which have a score higher than allowed, providing
improved blocking of spam and virus mails. policyd-weight caches the
most frequent client/sender combinations (SPAM as well as HAM) to reduce
the number of DNS queries.
Homepage:http://www.policyd-weight.org/ License: GPL-2
postfwd
- Ebuilds: 2, Testing: 2.03 Description:
postfwd (short for Postfix Firewall Daemon) is a Postfix policy server
that is written in Perl. It allows to define flexible and complex rules
to block access to the mail system before the actual message has been
accepted. The ruleset configuration supports features like scoring,
grouping, date and time based dependencies together with DNSBL lookups
and policy delegation (e.g. postgrey).
Homepage:https://www.postfwd.org/ License: BSD
postgrey (ambiguous, available in 2 overlays)
- Ebuilds: 3, Stable: 1.37_p20230714, Testing: 1.37_p20230714 Description:
Postgrey is a Postfix policy server implementing greylisting developed by David Schweikert at the ISG.EE.
Homepage:https://postgrey.schweikert.ch/ License: GPL-2
scmail
- Ebuilds: 1, Stable: 1.3, Testing: 1.3 Description: a mail filter written in Scheme
Homepage:http://0xcc.net/scmail/ License: BSD
sieve-connect
- Ebuilds: 1, Stable: 0.90, Testing: 0.90 Description:
This is sieve-connect. A client for the ManageSieve protocol,
as specifed in RFC 5804. Historically, this was MANAGESIEVE as
implemented by timsieved in Cyrus IMAP. This software is licensed
and the terms are provided in the file "LICENSE" as supplied
with this software (BSD license without the advertising clause).
SIEVE is an RFC-specified language for mail filtering, which at
time of writing is specified in a list of RFCs at the end of this
document, plus various drafts, both IETF and individual submissions.
It's designed to be regular enough for machines to be able to
manipulate, whilst still being editable by humans. Alas, not many
clients actually implement this instead of embedding their own
internal codes in sieve comments, defeating the goal of being able
to edit with a client of your choice.
This is not yet fully compatible with RFC 5804, but is moving
towards that from the timsieved baseline; some issues to be
worked on are documented in the "TODO" file.
sieve-connect speaks ManageSieve and supports TLS for connection
privacy and also authentication if using client certificates.
sieve-connect will use SASL authentication; SASL integrity layers
are not supported, use TLS instead. GSSAPI-based authentication
should generally work, provided that client and server can use a
common underlaying protocol. If it doesn't work for you, please
report the issue.
sieve-connect is designed to be both a tool which can be invoked
from scripts and also a decent interactive client. It should also
be a drop-in replacement for "sieveshell", as supplied with Cyrus
IMAP.
Homepage:https://people.spodhuis.org/phil.pennock/software/ License: BSD
spamassassin
- Ebuilds: 3, Stable: 4.0.2, Testing: 4.0.2-r1 Description: An extensible mail filter which can identify and tag spam
Homepage:https://spamassassin.apache.org/ License: Apache-2.0 GPL-2
spamassassin-botnet
- Ebuilds: 1, Testing: 0.8-r1 Description:
A spamassassin that performs DNS validations on the first untrusted relay
looking for signs of a Botnet infected host, such as no reverse DNS, a
hostname that would indicate an ISP client or domain workstation, or other
hosts that aren't intended to be acting as a direct mail submitter outside of
their own domain.
Homepage:https://wiki.gentoo.org/wiki/No_homepage License: GPL-2