AUC (Authenticated User Community) is an intranet system designed for use in an educational organization but is also useful in many other settings. It offers the ability for users to have a uniform web-based interface to discussion forums, e-mail (similar to hotmail, etc.), file management, and a searchable user database. Also, "Interactive Classrooms" provide a means for students and teachers to have a web-based extension to their in-class interaction. The system runs from a C-based monolithic CGI script. MySQL is used for database storage. Also, the web-based mail client supports MIME parts/attachments, IMAP, mbox, and multiple mail folders.
AutoFollowUp (AFU) is a mailing list program meant to run on your Web server. It was created expressly for those users who want to have an autoresponder hosted on their own site, but have severe limitations imposed by the Web server administrator. AutoFollowUp automates the process of following up with your customers. It allows you to create lists of email messages to send. After subscribing, a user could receive a welcome email, and then potentially get another message from you every day, every week, every month, or at any interval you specify.
Autosig is a small utility for generating .signature files for email and .plan files for finger. The file is generated from a quote randomly selected from a file of quotes and a header file. The header file and the randomly selected quote are combined to form the signature file or plan file. It can be run as a frontend to your favorite mail client, or as a daemon.
Autofiler is an automatic server-side mail filer application based on Bayesian text classification. In combination with an IMAP server, autofiler can file messages in folders automatically and with complete transparency. It uses (customized versions of) algorithms described in "A Statistical Approach to the Spam Problem".
B's Harmaa is Postfix policy server that implements greylisting and sender policy framework. What differentiates it from other similar programs is its unique autowhitelist feature. When a request for delivery of a message is received by Postfix via SMTP, the triplet CLIENT_IP / SENDER / RECIPIENT is built. If it is the first time that this triplet is seen or if the triplet was first seen less than one minute ago, then the message gets rejected with a temporary error. Spammers often will not try again later, even though it is required per RFC.
BEJY is a modular server application. It is packaged, by default, as a Web application container and mail server with SSL. It has functionality similar to inetd, and has some helper classes/functions to ease the implementation of new protocols. It provides a generic multithreaded TPC/IP server implementation with optional SSL support, covering the complete connection and thread management. Each supported service provides its protocol implementation. The current version comes with HTTP, SMTP, POP3, and IMAP protocol implementations. The HTTP protocol implementation also contains a servlet engine, a JSP 1.2 engine, a handler to invoke CGI, and other useful things. The mail protocols require a database using JDBC, as MySQL, MSSQL, and others.