Open Source C Email Software for Linux

Open source DKIM library, MTA filter implementation and associated tools.

Untangle is a Linux-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, bandwidth control, captive portal, VPN, firewall, and more. Visit http://untangle.com

Mixmaster is an anonymous remailer. Remailers provide protection against traffic analysis and allow sending electronic mail anonymously or pseudonymously. Mixmaster consists of both client and server installations.

MailCleaner Open Source Edition is now discontinued but will continue under the spamtagger project https://github.com/SpamTagger [antispam] MailCleaner is an anti-spam / anti-virus filter SMTP gateway with user and admin web interfaces, quarantine, multi-domains, multi-templates, multi-languages. Using Bayes, RBLs, Spamassassin, MailScanner, ClamAV. Based on Debian. Enterprise ready. MailCleaner is an anti spam gateway installed between your mail infrastructure and the Internet. It includes a complete GNU/Linux OS and a graphical web interface for user and administrative access. It comes in the form of virtual machine templates.. - fully compatible with any SMTP mail server (Exchange, Zimbra, O365,...)

A general purpose set of tools, C library and CPAN modules to help DomainKeys developers. The goal is that these tools and library can be easily adopted by all MTAs, LDAs and possibly MUAs. This project is about conforming to the DomainKeys standard,

This project is a C++ library which allows incorporating DKIM into an existing MTA or other application. It provides full support for signing, verifying, and SSP. It is compliant with RFC 4871.

NOTE: dkim-milter has been replaced by OpenDKIM, available at http://opendkim.org/ dkim-milter consists of two parts: A milter-based application (dkim-filter) which plugs in to Sendmail to provide DomainKeys Identified Mail service, and a library (libdkim) which can be used to build DKIM-compliant applications or MTAs.

dk-milter consists of two parts: A milter-based application (dk-filter) which plugs in to Sendmail to provide DomainKeys service, and a library (libdk) which can be used to build DomainKeys-compliant applications or MTAs. See the home page for details.

Mailfilter is a flexible utility for UNIX (-like) operating systems to get rid of unwanted spam mails, before having to go through the trouble of downloading them into the local computer. It offers support for one or many POP accounts.

AMaViS is a script that interfaces a mail transport agent (MTA) with virus scanners.

A sendmail milter for amavisd-new which use AM.PDP protocol.

ClamSMTP is an SMTP filter that allows you to check for viruses using the ClamAV anti-virus software. It accepts SMTP connections and forwards the SMTP commands and responses to another SMTP server. Works well with Postfix.

Método y Sistema de voto electrónico vía e-mail utilizando par de claves asimétricas PGPl.

IDTrans is developing b2b technologies. The primary aspects of the project are secure transmission libraries, a key server, and a application to demonstrate the use of the libraries.

The LDAP proxy is designed to be the part of the email encryption infrastructure which would simplify finding and using public encryption keys contained in X.509 public certificates.

Liberté Linux is a secure, lightweight, and easy to use Gentoo-based Linux distribution intended as a communication aid in hostile environments. Liberté installs on a USB key, and boots on any computer or laptop.

P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.

A perl server that accepts plain text mails for users and sends them out encrypted. Could be used in a company so that your accountant can be in contact with the salerperson in a secure way, without you needing to tell the accountant everything about PGP

This project is named PSCM, an acronym for POSTFIX, Spamassassin, ClamAV, Mailscanner. It is an integrated RPM package featuring a SMTP mail server, with spam filtering and virus scanning capabilities, designed for easy installation and usage.

A C library with support for logging, configuration, networking, message specification, semaphores, message queues, SSL, timing, epoll and email functionality.

SSL Signature Check (SSLSigcheck) is an email filter designed to be run from within procmail. It will examine the signature and certificate of a signed email, and add header information that procmail recipes can use to filter the message.

UnityCA is a Certificate Authority "front end" based on the Community-Oriented CA (COCA) model, which was primarily developed for non-profit "free CAs." Organizational and end-user interfaces provide trusted web management of the installed CA (eg ElyCA).

Camram is a hybrid antispam system combining multiple techniques improving the users e-mail experience.

dkfd is a DomainKeys filter daemon using libdomainkeys library. targeted usage is SMTP proxy of Postfix MTA. Currently developing under Linux/FreeBSD, and Solaris.

An API and test suite, or possibly an application unto itself, to manage keys and allow mail user agents (such as pine or mutt) to use encryption and authentication systems (such as S/MIME) via the services of external encryption suites (such as OpenSSL)