Software Map

FetchYahoo is a Perl script that downloads mail from a Yahoo!
account to a local mail spool. It is meant to replace fetchmail
for people using Yahoo! mail since Yahoo!'s POP service is no
longer free. It downloads messages to a local mail spool,
including all parts and attachments. It then deletes messages
unless requested not to. It can also optionally forward
messages to a specified email address and repeat with a given
interval.

Putmail is a very lightweight MTA or SMTP client that may replace the sendmail command when used by MUAs that lack SMTP support.

hermes is a generic, transparent and multi-platform
anti-spam SMTP proxy that uses a combination of
techniques (like greylisting, throttling, DNS white/blacklisting, SPF, etc.) to stop spam from reaching your mailbox. Many mailboxes see a 98% spam reduction with no false positives, as hermes is not filtering email based on content, but on strict adherence to the SMTP standards. It's also compatible with most SMTP extensions like STARTTLS (for SSL security) and SMTP-AUTH (for
user authentication).

Vacation is a Horde module for managing user email "vacation notices" or "auto-responders." It works via a local vacation program and the .forward style forwarding mechanism supported by several popular mailers. Currently, it provides fairly complete support for managing .forward style vacation notices on Sendmail or Courier mail based systems via an FTP transport. It also has some support for LDAP, Qmail, and Exim SQL based servers.

Tiger JMail is a direct replacement for Sun's
javamail, but with an LGPL license and fewer bugs.
TJ works with both the Kaffe and Sun JVMs. It's
tested, maintained, and in active use. TJ works
well, but there's a lot of room for improvement.

qmail-spp provides plug-in support for the qmail
SMTP daemon (qmail-smtpd). It allows you to write
external programs and use them to check SMTP
command argument validity. The plug-in can trigger
several actions, like denying a command with an
error message, logging data, adding a header, and
much more.

ACL Policy Daemon communicates with the Postfix MTA using the Policy Delegation Protocol, implementing an ACL (Access Control List) system. Key features: greylisting with flexible storage using memory for fast responses or disk for high persistence, SPF validation, control of messages by day/time, variable message size limits per domain or email, multiple RBL checking, and various ACLs available to use and combine. The configuration is simple and intuitive.

SPF is a new strategy for preventing junk mail.
The present SMTP standard for email allows anyone
to forge anyone else's email address. SPF verifies
that the Sender address of an email message
matches (according to some policy) the client IP
address that submitted it. libspf2 is a complete
and robust implementation of SPF which provides
support for many MTAs. Support for new MTAs is in
progress.

QMail Installation is a small and very practical
script that makes it easy to install qmail and
other related tools, such as vpopmail,
qmailadmin, spamassassin, F-prot, and qmailmrtg.

XamimeLT is an email scanner which encapsulates
your existing sendmail or Postfix server setup. It
scans both incoming and outgoing email. It can
scan for email viruses, unwanted file types (eg.
EXE, BMP, MPEG) and file names (eg.
prettypark.exe), spam, and almost anything you
care to search for in an email. It can also be
used to scan for text snippets within emails and
to insert disclaimers into outbound emails.
XamimeLT was formerly known as "Inflex".

Postfix Admin is a Web-based management tool for
Postfix. It handles Postfix-style virtual domains
and users that are stored in MySQL or PostgreSQL. It has support for over 20 languages. It was initially released in December of 2002.

Buni Meldware Communication Suite is an enterprise
groupware product providing an email server,
calendar server, and a Web mail client. The Web
mail portion is written using Adobe's Flash and
provides a rich cross-browser experience. Protocol
support includes IMAP, POP, SMTP, iCAL, WCAP, and
more. It uniquely supports full database email
storage as well as file system storage of emails
on major database platforms, and is easily
installed via a Web Start graphical installation
process.

EXACT is a program that implements POP-before-SMTP
relay authentication. It supports UW-imap,
Qpopper, Cyrus, Perdition, TeaPOP, EXIM, and
Sendmail out of the box. POP-before-SMTP relay
authentication is commonly used on systems that
provide IMAP and/or POP services as well as SMTP
services, to authenticate users for mail sending
based on their previous authentication against an
IMAP or POP server.

Synonym is a flexible Milter-based extension
running on top of Sendmail allowing mail
administrators to copy SMTP traffic to a specified
mailbox, and drop and reject emails based on
regular expression filters.