Free milter spamblocker software for linux

smf-zombie is a Sendmail milter for SPAM/virus filtration from zombie computers.
Today is more than 70-80% of SPAM and viruses going from infected Windows computers around the world.
This milter aims to be lightweight, reliable and simple. Zombie SPAM blocker is written in C.
Main features:
- It has a hosts/networks whitelist;
- It can scan messages less than a defined size only;
- It can block the most of SPAM/virus engines (up to 80-85% of them);
- It can check the sender IP address with the most reliable zombie RBL - cbl.abuseat.org;
- It can safely reject "alien" bounce messages without RFC violating;
- It can reject messages for undisclosed recipients;
- It can reject harmful attachments to prevent viruses from spreading;
- It can log all milter activities through the syslog service.
Advantages:
- Small code;
- Fast work;
- Stability (production quality);
- Few system resources are required.
Enhancements:
- A workaround for the Sendmail socket unsafe error on some platforms was implemented.
- A bug with the greeting pause code under FreeBSD was fixed.
- Configuration file, default user, and working directory were changed.
- The format of log records was changed.
- Some samples of start-up scripts were added.
- New TODO tasks were added.
- Cosmetic enhancements were made.

TclMilter is a package for Tcl (written in C) that implements an interface to SendMails Milter (Mail Filter) API for developing custom scripted message rewriting and spam filtering processes.
A thread-enabled Tcl build is required due to Milters threading requirements. However, you can only run, configure, or register callbacks for a milter from the first thread/interpreter the package is loaded into.
If you need to be able to stop the milter from within Tcl, you can load the package in another thread to do so. Only the "milter stop" command will function in secondary threads.
This extension is provided under the GNU General Public License (GPL) (see the file "license.terms" for details).
Main features:
- The smfi_opensocket command is not provided, only milter main as an interface to smfi_main.
- The smfi_setconn, smfi_settimeout, smfi_setbacklog and smfi_setdbg commands, as well as settings normally provided through smfi_main are instead provided as milter configure options.
- The smfi_register command is provided as milter register; however, unlike libmilter its possible to register and unregister callbacks at any time, rather than just once prior to calling main.
- There isnt a single data storage value for smfi_setpriv; rather, TclMilters milter setpriv command uses a hash table so you can set individual, custom variables with data to associate with a context.
- The context provided to callbacks is not simply a pointer, but is an actual Tcl command that can be used to interact with the context.

avpmilter is a sendmail milter interface to the Kaspersky antivirus daemon.
Avpmilter gets virus scan result and tells sendmail MTA to send reject message upon virus detection. This program is not MTA, nor antivirus by itself.

In comparison with will Kasperskys kavkeeper it will improve performance of your mail subsystem because:
It will not reinject each message for each recipient back to sendmail MTA ( if sendmail receives, for example, one message for 30 recipients, kavkeeper will initiate 30 requests to antivirus daemon and 30 additional executions of sendmail program. Avpmilter will send only one request to antivirus daemon and will not initiate additional executions of sendmail program).

Avpmilter is small resident miltithreaded program, thus it avoids expensive fork() calls.
Avpmilter almost does not affects your current sendmail configuration. Moreover milter interface allows to run sendmail MTA and filter on different computers. avpmilter requires sendmail 8.11.x or 8.12.x built with milter support (which is the default option for sendmail 8.12). You can read about how to build and configure sendmail with milter interface in libmilter/README in sendmail source tree. Also you can find a good milter api ocumentation in libmilter/docs directory in version 8.12 of sendmail.

smtp-vilter is a high-performance content filter for sendmail, which detects email viruses and spam.

smtp-vilter can pass, discard, or simply mark an email based on the results of a content scan. It relies on third-party products for the actual content scan. It uses the milter API to communicate with sendmail, and backends to communicate with the actual scanning engines.

The backends can be chained to perform a series of checks on each message in one run.

smf-spamd is a Sendmail filter for SpamAssassin. Sendmail filter for SpamAssassin aims to be lightweight, reliable, and simple rather than have a myriad of options.
It only scans the messages less than defined size, has a hosts/networks whitelist, performs subject tagging if SPAM is detected, adds an information header, copies SPAM messages to the defined "garbage" mailbox, rejects SPAM messages at the SMTP DATA stage, and logs all filter activities to syslog.
The code is small (does not exceed 580 lines), fast, stable, and few resources are required. No temporary files are created.
Main features:
- It has a hosts/networks whitelist;
- It can scan messages less than a defined size only;
- It can tag the Subject if SPAM has been detected;
- It can add an information header with scan results to scanned messages;
- It can copy SPAM messages to the special "garbage" mailbox;
- It rejects SPAM messages at the SMTP DATA stage, if SPAM score is greater than a defined value;
- It can log all milter activities through the syslog service.
Advantages:
- Small code;
- Fast work;
- Stability (production quality);
- Few system resources are required;
- No temporary files are created.
Enhancements:
- Incorrect handling of missed Message-Id: header was fixed.
- Cosmetic enhancements were made.

Sendmail-Jilter is an Open Source implementation of the Sendmail milter protocol, for implementing milters in Java that can interface with the Sendmail MTA.
Enhancements:
New Features:
- Added JilterHandlerAdapter. Thanks to Neil Aggarwal (neil@JAMMConsulting.com).
Changes:
- Updated docs for return value from JilterHandler.connect to reflect the fact that the MTA doesnt listen to anything other than SMFIS_ values. Thanks to Neil Aggarwal (neil@JAMMConsulting.com).
- Refactored SimpleHandler in the test cases to use JilterHandlerAdapter.

Sendmail::Milter is a Perl interface to sendmails Mail Filter API.

SYNOPSIS

use Sendmail::Milter;

my %my_milter_callbacks =
(
connect => &my_connect_callback,
helo => &my_helo_callback,
envfrom => &my_envfrom_callback,
envrcpt => &my_envrcpt_callback,
header => &my_header_callback,
eoh => &my_eoh_callback,
body => &my_body_callback,
eom => &my_eom_callback,
abort => &my_abort_callback,
close => &my_close_callback,
);

sub my_connect_callback;
sub my_helo_callback;
sub my_envfrom_callback;
sub my_envrcpt_callback;
sub my_header_callback;
sub my_eoh_callback;
sub my_body_callback;
sub my_eom_callback;
sub my_abort_callback;
sub my_close_callback;


BEGIN:
{
# Get myfilters connection information
# from /etc/mail/sendmail.cf

Sendmail::Milter::auto_setconn("myfilter");
Sendmail::Milter::register("myfilter",
%my_milter_callbacks, SMFI_CURR_ACTS);

Sendmail::Milter::main();

# Never reaches here, callbacks are called from Milter.
}

Sendmail::Milter is a Perl extension to sendmails Mail Filter API (Milter).

Note: You need to have a Perl 5.6 or later interpreter built with -Dusethreads.

AVIRA Webmin Remote Panel is designed to make the maintenance of AVIRA products easier and less time consuming.
This product addresses mainly the users of AVIRA server products and especially the system administrators who must keep track of various services on production servers.
Complex solutions based on multiple AVIRA products for Unix are now easy to configure and maintain with AVIRA Webmin Remote Panel. It is smoothly integrated as a module of the Webmin configuration tool, intended to meet the needs of system administrators.
This is a separate application that was developed as a Webmin module, being a handy graphical tool and a time saver for companies dealing with multiple AVIRA products. Via a straightforward graphical interface, AVIRA Webmin Remote Panel helps managing configuration files and eases the maintenance process of AVIRA solutions.
Placed between the configuration files and the system administrator, this module helps managing the following AVIRA products:
- AVIRA Desktop for Unix
- AVIRA for Unix Server
- AVIRA MailGate
- AVIRA for Sendmail-Milter
- AVIRA WebGate
AVIRA Webmin Remote Panel highlights a simple management interface, designed to configure and smoothly control AVIRA products installed on a network. This application helps you stay informed about the status of your currently running AVIRA solutions, displaying the messages generated by these applications in the system logs.
AVIRA Webmin Remote Panel also manages the engine settings, helping to keep track of administration alerts, licenses and other related aspects.
Main features:
- Configuration of AVIRA Desktop for Unix;
- Configuration of AVIRA for Unix Server;
- Configuration of AVIRA MailGate;
- Configuration of AVIRA Sendmail-Milter;
- Configuration of AVIRA WebGate;
- Simple interface for controlling installed AVIRA products on your system;
- Simple interface for displaying the messages generated by AVIRA products in the system logs.