afew | Initial tagging script for Notmuch |
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amavisd-milter | sendmail milter for amavisd-new |
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amavisd-new | High-performance interface between the MTA and content checkers |
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bmf | Fast and small Bayesian spam filter |
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bogofilter | Bayesian spam filter designed with fast algorithms, and tuned for speed |
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courier-pythonfilter | Python filtering architecture for the Courier MTA |
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couriersrs | SRS (Sender Rewriting Scheme) wrapper for the courier MTA |
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dcc | Distributed Checksum Clearinghouse |
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dkimproxy | An SMTP proxy server for adding DKIM headers |
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exim-geoip | This is an IPv4 and IPv6 capable GeoIP dlfunc library for Exim |
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exim-p0f | This is p0f version 3 dlfunc library for Exim |
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gld | Standalone anti-spam greylisting algorithm on top of Postfix |
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imapfilter | An IMAP mail filtering utility |
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libmilter | The Sendmail Filter API (Milter) |
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libopensmtpd | Library for creating OpenSMTPD filters |
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libsieve | A library for parsing, sorting and filtering your mail |
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libspf2 | implementation of Sender Policy Framework (SPF) |
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libsrs2 | libsrs2 is the next generation Sender Rewriting Scheme library |
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maildrop | Mail delivery agent/filter |
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mailfilter | Mailfilter is a utility to get rid of unwanted spam mails |
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MailScanner | Free Anti-Virus and Anti-Spam Filter |
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mapson | A challenge/response-based white-list spam filter |
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milter-regex | A milter-based regular expression filter |
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mimedefang | Antispam, antivirus and other customizable filters for MTAs with Milter support |
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normalizemime | Helper program to normalize MIME encoded messages |
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opendkim | A milter providing DKIM signing and verification |
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opendmarc | Open source DMARC implementation |
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opensmtpd-filter-dkimsign | OpenSMTPD filter for signing mail with DKIM |
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opensmtpd-filter-rspamd | OpenSMTPD filter for putting emails through rspamd |
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policyd | Policy daemon for postfix and other MTAs |
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policyd-weight | Weighted Policy daemon for Postfix |
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popfile | Anti-spam bayesian filter |
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postforward | Postfix Sender Rewriting Scheme forwarding agent |
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postfwd | Versatile Postfix policy server with a flexible ruleset based configuration |
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postgrey | Postgrey is a Postfix policy server implementing greylisting |
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postsrsd | Postfix Sender Rewriting Scheme daemon |
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procmail | Mail delivery agent/filter |
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pyzor | A distributed, collaborative spam detection and filtering network |
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razor | Distributed, collaborative spam detection and filtering network |
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rblcheck | Perform lookups in RBL-styles services |
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rspamd | Rapid spam filtering system |
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scmail | a mail filter written in Scheme |
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sieve-connect | Sieve Command Line Interface |
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spamassassin | An extensible mail filter which can identify and tag spam |
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spamassassin-botnet | SpamAssassin plugin that attempts to detect messages sent by a botnet |
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spampd | A program to scan messages for Unsolicited Commercial E-mail content |
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spamprobe | Fast, intelligent, automatic spam detector using Bayesian analysis |
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spf-engine | Policy daemon for Postfix SPF verification |
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sqlgrey | A postfix policy service implementing a grey-listing policy |
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zdkimfilter | DKIM filter for Courier-MTA |
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