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- Read any extra info available with the plugins, including the comments in the .cf files, or the POD documentation in the .pm file.
- Check to make sure that the default scores fit your installation. You might want to modify scores.
- Make sure to --lint the rules after loading them.
- Test the new plugin. Keep an eye on hits from the new rules to determine if the scoring is right for you.
Use at your own risk. These plugins are not generally audited for security, performance or compatibility for any specific SpamAssassin version.
Status Information
Active: Plugin is actively updated and maintained
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Plugins without a recent "Maintained as of:" date have been moved to UnmaintainedCustomPlugins. If you own one, or have confirmed that it is currently usable, feel free to move it back here and update that field.
Free Plugins
TesseractOCR
Mail::SpamAssassin::Plugin::AttachmentDetail
SpamAssassin plugin to check attachment detailsImage scanning with Tesseract OCR engine
Created by: MailCleaner / Fastnet SAKent Oyer
License Type: Apache License, Version 2.0?
Status: Active
Maintained as of: 20202023-0305-0218
Added: 20202023-0305-0218
Available at: https://github.com/MailCleaner/TesseractOcrmxguardian/Mail-SpamAssassin-Plugin-AttachmentDetail
Mail::SpamAssassin::Plugin::RedisAWLASCII
SpamAssassin plugin to convert non-ASCII characters to their ASCII equivalentsredis support for spamassassin AWL/TxRep
Created by: Markus Benning
Contact: https://markusbenning.de/
License Type: Apache License, Version 2.0
Status: Active
Kent Oyer
License Type: ?
Status: Active
Maintained as of: 20152023-0605-0812
Added: 20152023-0605-1112
Available at: https://metacpangithub.orgcom/releasemxguardian/Mail-SpamAssassin-Plugin-RedisAWLASCII
Mail::SpamAssassin::Plugin::RuleTimingRedisPDFInfo2
Improved PDF Plugin for SpamAssassincollect SA rule timings in redis
Created by: Markus BenningContact: https://markusbenning.de/Kent Oyer
License Type: Apache License, Version 2.0?
Status: Active
Maintained as of: 20152023-0601-0826
Added: 20152023-0601-1126
Available at: https://metacpangithub.orgcom/releasemxguardian/Mail-SpamAssassin-Plugin-RuleTimingRedisPDFInfo2
Note: The collectd plugin CollectdMail::SpamAssassin::Plugins::RedisClient could be used to record counter values.
Botnet
Botnet looks for possible botnet sources of email by checking various DNS values that indicate things such as other ISP's clients or workstations, or misconfigured DNS settings that are more likely to happen with client or workstation addresses than servers. Mirrored for educational purposes with applied patches, as it seems abandonded and nowhere to be found. No other changes are done. As the plugin has some interesting idea's there might be a (partial) rewrite in the future.
Original Author: John Rudd
Maintainer: Thijs Eilander
Contact: via github
License Type: GNU General Public License
Status: Inactive but works fine on 3.4.1
Maintained as of: 2014-11-19
Plugin::Esp
SpamAssassin plugin for Invaluement.com Service Provider DNSBLs ("SPBL")
Created by: Giovanni Bechis
License Type: Apache License, Version 2.0
Status: Active
Maintained as of: 2020-08-23
Added: 2020-09-09
Available at: https://github.com/bigio/spamassassin-esp
Mail::SpamAssassin::Plugin::ClamAV
Virus check using Clamav antivirus
Created by: Giovanni Bechis
License Type: Apache License, Version 2.0
Status: Active
Maintained as of: 2020-01-18
Added: 2020-06-04
Available at: https://github.com/bigio/spamassassin-clamav
TesseractOCR
Image scanning with Tesseract OCR engine
Created by: MailCleaner / Fastnet SA
License Type: Apache License, Version 2.0
Status: Active
Maintained as of: 2020-03-02
Added: 2020-03-02
Available at: https://github.com/MailCleaner/TesseractOcr
Mail::SpamAssassin::Plugin::iXhash2
iXhash2 is an unofficial improved version of iXhash plugin for SpamAssassin, adding async DNS lookups for performance and removing unneeded features. It's fully compatible with the iXhash 1.5.5 (https://sourceforge.net/projects/ixhash/) implementation. It computes MD5 checksums of fragments of the body of an e-mail and compares them to those of know spam using DNS queries to a RBL-like name server.
Created by: Henrik Krohns
License Type: Apache License, Version 2.0
Status: Active
Maintained as of: 2021-04-25
Added: 2021-04-25
Available at: https://mailfud.org/iXhash2/
Mail::SpamAssassin::Plugin::RedisAWL
redis support for spamassassin AWL/TxRep
Created by: Markus Benning
Contact: https://markusbenning.de/
License Type: Apache License, Version 2.0
Status: Active
Maintained as of: 2015-06-08
Added: 2015-06-11
Available at: https://metacpan.org/release/Mail-SpamAssassin-Plugin-RedisAWL
Mail::SpamAssassin::Plugin::RuleTimingRedis
collect SA rule timings in redis
Created by: Markus Benning
Contact: https://markusbenning.de/
License Type: Apache License, Version 2.0
Status: Active
Maintained as of: 2015-06-08
Added: 2015-06-11Added: 2015-05-14
Available at: https://githubmetacpan.comorg/eilandert/Botnet.pm
Mail::SpamAssassin::Plugin::DecodeShortURLs
Decodes shortened URLs via HTTP HEAD request to the shortening service and adds the decoded URL into the list of URIs extracted by SpamAssassin for other plugins to find (e.g. URIDNSBL).
Created by: Steve Freegard
Contact: steve.freegard at fsl.com
License Type: Apache
Status: Active
Maintained as of: 2013-03-13
release/Mail-SpamAssassin-Plugin-RuleTimingRedis
Note: The collectd plugin Collectd::Plugins::RedisClient could be used to record counter values.
Botnet
Botnet looks for possible botnet sources of email by checking various DNS values that indicate things such as other ISP's clients or workstations, or misconfigured DNS settings that are more likely to happen with client or workstation addresses than servers. Mirrored for educational purposes with applied patches, as it seems abandonded and nowhere to be found. No other changes are done. As the plugin has some interesting idea's there might be a (partial) rewrite in the future.
Original Author: John Rudd
Maintainer: Thijs Eilander
Contact: via github
License Type: GNU General Public License
Status: Inactive but works fine on 3.4.1
Maintained as of: 2014-11-19
Added: 2015-05-14Added: 2010-09-17
Available at: https://github.com/smfreegardeilandert/DecodeShortURLsBotnet.pm
MTX
A distributed DNS whitelist. (Named after MX records plus the abbreviation "TX" for "transmit".)
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