## A Free Anti-Virus and Anti-Spam Filter
Protecting over 5 billion e-mails every week, for many tens of millions of users

## Over 300,000 downloads

### Version 4.33 1st September 2004

## Contents

- Introduction and Executive Summary
- Professional Support Services
- Was your mail rejected by MailScanner?
- Press and Media resources
- Presentations and Talks about MailScanner
- Features and Description
- News
- MailScanner on-line store
- 3rd Party Commercial Systems and Services Based on MailScanner
- MailScanner Users' Comments and Testimonials Guest Book
- Some of the users of MailScanner
- E-Mail the team

## Buy the book!

- Downloads (and graphs of them)
- What's New In Version 4
- Installation Guides And Documentation
- Most Frequently Asked Questions (MAQ)
- Frequently Asked Questions (FAQ)
- Old Installation FAQ
- Deploying MailScanner with Microsoft Exchange Server
  (or any other unsupported mail server)
- Monitoring MailScanner using MRTG
- Performance and Detection Statistics for ECS
- All donations and gifts are most welcome
- Survey
- External Links
- Poetry

## Talk To Us

If you download MailScanner to try it out, or even better if you start using it on your site, please let us know by dropping us a line so we have some idea of where it is being used.

## Mailing Lists

There are 2 mailing lists for MailScanner users.

The first is an "announcements only" list which I strongly advise you to subscribe to. This is where all announcements will be made of new versions of MailScanner and associated software such as MailWatch and MailScanner-MRTG. You can subscribe to this list by sending an email to jiscmail@jiscmail.ac.uk containing

  `join mailscanner-announce` your-first-name your-last-name

The second list is a discussion list where all new features, configuration issues and so on are discussed. This is where to go if you need help. The developers also keep an eye on it, so it's a good place to suggest new features, problems, questions, etc. But please remember there are limits to the time that can be spent on unpaid support. If you need more specific help, please read about our professional support options. You can access this list on the web, or you can subscribe by sending an email to jiscmail@jiscmail.ac.uk containing

  `join mailscanner` your-first-name your-last-name

Before posting questions to us or the mailing list, please search the list archives and read the Installation FAQ.

## Survey

We have an ongoing usage survey. If you use MailScanner on your site, please can you email us the number of messages processed by MailScanner each day. We don't need to know the number of viruses found, or anything like that, just the number of email messages that MailScanner scans each day. Thankyou!

## News

10/9/2004 | Released beta 4.34.1 to test out new MIME-tools and MIME-Base64 packages.
10/9/2004 | Released updated package for ClamAV and SpamAssassin 3.0.0-RC4.
6/9/2004 | Released installation package for ClamAV, the ClamAV perl module, and SpamAssassin 3. There are install scripts in the package for both RPM-based and non-RPM systems. And yes, you can skip the installation of ClamAV itself if you already have it installed from somewhere else.
1/9/2004 | Released stable version 4.33.3-1. No really major changes this month, just a collection of minor improvements and a few fixes. Please see the ChangeLog for details.
1/8/2004 | Released stable version 4.32.5-1. Major changes this time include fixes for MyDoom-0 problems, "Spam Score Number Format" option, "Run In Foreground" option and "--version" command-line switch to report all module versions to aid debugging and list postings. Please see the ChangeLog for details.
27/7/2004 | Released beta version 4.32.4-1. This should fix the problems with MyDoom-O.
22/7/2004 | Released beta version 4.32.3-1. Please see the ChangeLog for details.
10/7/2004 | Released beta version 4.32.2-1. Please see the ChangeLog for details.
1/6/2004 | Released stable version 4.31.4-1. New install.sh script for non-RPM systems to greatly ease installation, updated support for various virus scanners and SuSE 9.1, and fixed some problems such as file modification when signing quoted-printable PDF attachments. Various other bug fixes and many updates, see the ChangeLog for details.
26/5/2004 | Released unstable version 4.31.3-1. Various bug fixes, including one for Postfix 2.1 users on some old versions of Perl, and many updates and improvements to the install.sh for non-RPM systems.
22/5/2004 | Released unstable version 4.31.2-1. Updated support for new virus scanners, can now detect and disarm "web bugs", reports can contain %variables%. Other changes as well, please see the ChangeLog.
2/5/2004 | Released minor update. Fixed problem in previous release were Net::CIDR would not always install properly on RPM-based systems, and moved default installation location of BitDefender to /opt/bdc.
1/5/2004 | Released stable version 4.30.3. More improvements to MIME decoding and zip-file handling. See the Changelog for full details.
25/4/2004 | Released unstable version 4.30.2-1. Pre-release for 4.30. Please report any problems. See the Changelog for full details.
14/4/2004 | Released unstable version 4.30.1-1. Added support for SpamAssassin V3 and AVG scanner. Another MIME decoding improvement. Zip files can now be found by either content or name. See the Changelog for full details and a list of the other changes.
1/4/2004 | Released stable version 4.29.7-1. Lots of updates this time for multi-layered defences against all the tactics in use by the virus writers, and some reliability, robustness and speed improvements. See the Changelog for full details. In March, we had over 23,000 downloads and were accessed from over 70,000 different sites.
25/3/2004 | Released unstable version 4.29.6-1. Zip files are now detected by content and not just name. Fix to Bayes regular rebuilding code, so it should now report any errors that caused it to fail. Various logging improvements.
23/3/2004 | Released unstable version 4.29.5-1. Added BinHex decoder and facility to have a directory full of Custom Functions to make upgrading easier. Old version of this facility (CustomConfig.pm) is still present as well.
22/3/2004 | Released unstable version 4.29.4-1. Fixed bugs in Postfix compatibility and MCP message delivery problems.
18/3/2004 | Released unstable version 4.29.3-1. Fixed bug in handling of messages with several attachments, and can now unpack self-extracting Zip archives.
18/3/2004 | Released unstable version 4.29.2-1. Now detects nasty emails generated by Bagle.Q worm.
16/3/2004 | Released unstable version 4.29.1-1. Fix for passing archives through properly when allowing all password-protected archives. Minor speed-ups. Expect to see "defunct" processes appear with this version, it is quite normal.
8/3/2004 | Released stable version 4.28.6-1. Fixed problem for Debian users with files in the queue directory. Possible speed improvement as well.
5/3/2004 | Released stable version 4.28.5-2. Slight error which might stop RPM distributions installing properly.

5/3/2004

Released stable version 4.28.5. This version can block password-protected zip files, and can unpack zip files to apply file name and content rules (as well as virus scanning) to their content. If you use the RPM distributions, then all required Perl modules will automatically installed for you when you run the "./install.sh" script. If you use the tar distribution, then please see the documentation for information about what Perl modules are needed. Please also read the ChangeLog.

3/3/2004

Released unstable version 4.28.3. I have re-written the zip analyzing code to a large extent, and there is now a new keyword in the "Silent Viruses" list called "Zip-Password". Adding this to your Silent Viruses list will stop notifications about these being sent to the (possibly fake) sender of the file. You will still need to install the Perl modules Compress::Zlib and Archive::Zip yourself before using this version.

2/3/2004 | Released unstable version 4.28.2. This version can detect password-protected zip files and optionally block them. You will still need to install the Perl module Archive::Zip yourself before using this version.
1/3/2004 | Released unstable version 4.28.1. This version can read zip files so you can apply filename rules in there. Note: You will have to install the Perl module Archive::Zip yourself before this version will run.
1/3/2004 | Released stable version 4.27.7. Since 4.26, the most important improvements are those that I have made to the MIME decoder, which is a lot more robust than it was. See the ChangeLog for everything else.

Old News...

## Links

Due to the nature of this software, I have an interest in the Regulation of Investigatory Powers Act which has just come into force in the United Kingdom. Under section 3(3) of the Act, I believe that this sort of interception is legal, but care must be taken to ensure that no-one other than the sender and intended recipient of any message can read any part of that message. This certainly includes infected attachments.

- Very good centre of information about RIP in the United Kingdom

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Julian Field