Alternatives and similar repositories for pigeonhole:

Users that are interested in pigeonhole are comparing it to the libraries listed below

• vstakhov / rmilter
  Another sendmail milter for different mail checks.
  ☆86Updated 7 years ago
• trusteddomainproject / OpenDMARC
  This is the Trusted Domain Project's impementation of the DMARC protocol libary and mail filter, called OpenDMARC. A "milter" connects t…
  ☆108Updated 5 months ago
• Snawoot / postfix-mta-sts-resolver
  Daemon which provides TLS client policy for Postfix via socketmap, according to domain MTA-STS policy
  ☆124Updated last month
• trusteddomainproject / OpenARC
  Open source ARC implementation
  ☆136Updated 9 months ago
• trusteddomainproject / OpenDKIM
  ☆100Updated 6 months ago
• HeinleinSupport / olefy
  olefy - oletools verify over TCP socket
  ☆44Updated 11 months ago
• letoams / hash-slinger
  ☆52Updated last week
• rspamd / rspamd.com
  rspamd.com website.
  ☆26Updated 3 weeks ago
• OpenSMTPD / OpenSMTPD-extras
  This is the mirror of the official repository of OpenSMTPD addons
  ☆57Updated 3 months ago
• schweikert / mailgraph
  Mail plotting script
  ☆67Updated 5 years ago
• schweikert / postgrey
  Postfix Greylisting Policy-Daemon
  ☆162Updated 7 months ago
• stevejenkins / postwhite
  Script for generating a whitelist for Postfix's Postscreen based on large senders' SPF records
  ☆90Updated 4 years ago
• baknu / DANE-for-SMTP
  'DANE for SMTP' wiki
  ☆32Updated 4 years ago
• bruceg / nullmailer
  Relay-only sendmail/qmail/etc replacement MTA
  ☆190Updated 2 months ago
• fastmail / authentication_milter
  Email Authentication by SPF/DKIM/DMARC etc.
  ☆123Updated last month
• roehling / postsrsd
  Postfix Sender Rewriting Scheme daemon
  ☆329Updated last week
• SpamExperts / pyzor
  Pyzor is a Python implementation of a spam-blocking networked system that use spam signatures to identify them.
  ☆145Updated 4 months ago
• postfwd / postfwd
  Postfwd - http://www.postfwd.org
  ☆70Updated 4 years ago
• slusarz / dovecot-fts-flatcurve
  Dovecot FTS Flatcurve plugin (Xapian)
  ☆46Updated 4 months ago
• philpennock / sieve-connect
  A client for the MANAGESIEVE Protocol
  ☆77Updated 3 years ago
• grosjo / fts-xapian
  Dovecot FTS plugin based on Xapian
  ☆99Updated this week
• stevejenkins / hardwarefreak.com-fqrdns.pcre
  Archive copy of Stan Hoeppner's Postfix PCRE bot spam killer (fqrdns.pcre)
  ☆26Updated 7 years ago
• spamhaus / rspamd-dqs
  Spamhaus code for RSPAMD Plugin. See https://docs.spamhaustech.com/40-real-world-usage/Rspamd/000-intro.html for instructions
  ☆65Updated 8 months ago
• moisseev / rspamd-spamness
  Thunderbird add-on for visualizing rspamd spam scores.
  ☆56Updated last month
• dovecot / imaptest
  IMAP server tester
  ☆56Updated last month
• oskar456 / dzonegit
  Git hooks to manage a repository of DNS zones
  ☆53Updated 3 years ago
• plinss / acmebot
  Certificate manager bot using ACME protocol
  ☆115Updated 9 months ago
• darix / dovecot-sieve-antispam-rspamd
  Dovecot Antispam with Sieve (and rspamd)
  ☆56Updated 3 years ago
• dlangille / anvil
  Tools for distributing ssl certificates
  ☆30Updated last year
• shevek / libspf2
  Implementation of the Sender Policy Framework for SMTP authorization
  ☆37Updated last year