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MeTA1 is a message transfer agent that has been designed with these main topics in minds:
* Security
* Reliability
* Efficiency
* Configurability
* Extendibility
MeTA1 consists of five main modules of which only one runs as root:
* mcp: the main control program is similar to inetd(8): it starts all other MeTA1 modules and watches over their
execution. mcp runs as root in order to bind to port 25 and to change the uid of the processes it starts...
Spey is the easy way to reduce the amount of spam you receive. It sits between your mail server and the outside world and performs greylisting and other verification checks. It needs very little configuration and no mail server setup and Just Works(TM).
DSN Support for Exim. This patch allows Exim 4.xx to support the sending of email Delivery Status Notifications.
From Exim 4.83 onwards DSN is now included as standard (based on this patch).
dsn_process was a removed option of this standard inclusion and so the patches after 4.76 will re-enable that functionality and provide a binary with the same options / configurations as previously.
Ciphermail email encryption gateway (S/MIME, OpenPGP, PDF encryption)
...Ciphermail Email Encryption Gateway is compatible with any existing email infrastructure like Microsoft Exchange and Lotus Notes and has support for S/MIME, OpenPGP and PDF encryption.
Ciphermail Email Encryption Gateway has a built-in CA which can be used to issue X.509 certificates for internal and external users.
For additional security, keys can be securely generated and stored in a tamper proof Hardware Security Module (HSM).
The built-in Data Leak Prevention (DLP) module can be used to prevent certain information to leave the organization via email.
Ciphermail can be installed on most Linux and Unix based systems. Installation packages are available for Ubuntu, Debian, Red Hat/CentOS and OpenSUSE. ...
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This java program allows you to make backups of your emails from one server to an other by copying emails over IMAP. It can also be used to switch emails you have from your old provider to your new one.
Rumble is a mail server suite for SMTP (ESMTPSA), HTTP, POP3 and IMAP4v1 with an extensive C/C++ and Lua API for scripting. It comes with support for SSL/TLS, SQLite and MySQL and has a web-based administration and webmail feature. Additional included modules feature greylisting, DNS blacklisting, SpamAssassin support and dynamic performance scaling as well as a multithreaded structure that allows for clustering of multiple servers for one or all domains, and with the ease of the Lua API,...
Jamm (Java Mail Manager) is a web application to manage virtual email account information stored in an LDAP directory. It is meant as an administration tool for sites using mail servers, such as Postfix and Courier-IMAP.
Mailster is a project aimed at testing software mail capabilities. It provides a mail server container to test emails sent by your apps without rewriting your application code.
TMDA is an open source anti-spam system and local mail delivery agent written in 100% pure Python. TMDA combines whitelists, blacklists, a challenge/response system, and special-purpose e-mail addresses called "tagged addresses" to thwart spam.
A Web Frontend to administrate email accounts, the real domain and virtual domains for a Postfix Server, which use a MySql Backend (maybe other Backends work also). The Project was written in Java using Java Server Faces.
POSS is a suite of multi-platform PHP scripts allowing users to implement features of the SMTP protocol on their PHP enabled web-server. POSS is currently comprised of email, a fully featured, functionally compatible mail() replacement.
Policy-daemon for the postfix MTA in perl. Scores RBLs, RHSBLs, HELO, Client IP and MAIL FROM argument and sums up a score on which you can reject the mail before DATA will be received. Results are cached. I.e: a weighted SMTP filter before DATA (queue).
iMailist is a software allowing the sending of mails to format HTML to a whole mailing-list.
The program is written in Objective-C/Cocoa and works on Mac OS 10.3
Visual Synapse are component wrappers around the Synapse tcp/ip libraries. It wraps a few common internet protocols, like HTTP, UDP, DNS, ICMP, TCP and SMTP to multi-threaded components that can be used with Delphi, Kylix, Freepascal and C++ Builder.
GSR is a program to relay local SMTP traffic through a user’s GMail account. If you are behind an ISP that no longer allows SMTP traffic, GSR will allow you to relay your servers SMTP traffic through your GMail account for remote deliver.
PeMaR is a gateway, that relays outgoing email to anonymous remailer networks and receives and decodes anonymous mixminion messages. It allows the use of any email client to send and receive anonymous email. An extension is available for Thunderbird.