Requirements
RH 8.0 or Equiv or higher
MacOS X 10.2 or higher
FBSD 4.8 or higher, 5.x requires 4.x compat libs
Sendmail, Qmail, Postfix, CGPro, Surgemail
SpamAssassin 3.x recommended. We interface with spamd
ClamD - Latest
Webmin is Highly Recommended - http://www.webmin.com

Download Links for version 1.2 build 113
Linux RPM

Linux tar.gz

MacOS X DMG

FBSD PKG

Webmin Module

Documentation

Quickstart

MPP Paid Support
Buy MPP Support From RAE Internet

FAQ's

How do I join the MPP mailing list for support?
Send an email to mpp-subscribe at raeinternet . com

What is the difference between MPP Free Edition and MPP Standard Edition?
Support for MPP Free Edition is via mailing list only, mpp@raeinternet.com, there is zero warranty for this product, you can not disable header marking, there is no license key, and there is no way to use MPP Free Edition with any commercial virus or spam engines such as Sophos, Cloudmark, etc.

What is the difference between MPP Free Edition and MPP Enterprise Edition?
TONS! MPP Enterprise Edition has a policy engine for different configurations per customer, many compliance features such as archival and content filtering, SNMP monitoring, directory integration and an entirely re-worked core. MPP Enterprise Edition is a complete email services platform, MPP Free Edition is a very fast virus and spam scanner for Sendmail, QMail, Postfix, CommuniGate Pro and SurgeMail.

How do I install MPP Free Edition?
In most cases, download the files, unpack them, run the installer - RPM, tar.gz or MacOS X installer, - and then run our configure script, /usr/local/MPP/configure.pl. You can always read our mailserver installation guide which gives complete instructions if our configure scripts fail to properly configure the email server - MPP MailServer Installation Guide

I need support for my product and I want the option of using commercial scanners, can I upgrade to MPP Enterprise or Standard Edition?
Yes, please contact us for details

Is there a license key for MPP Free Edition?
No, there is no license key and no trial period, the software is fully functional from day 1.

What license if the MPP Free Edition under?
MPP Free edition is Freeware. It is copyright protected commercial software that is free. We thought about making it GPL but the downsides of this license are greater than the upside. First of all, the software is written in C++ and is quite complicated so the pool of qualified and interested contributors would be fairly small. The costs involved in documenting and organizing the software for outsiders to make sense of the code are quite high and we do not have the financial backing that many of the major GPL projects have now a days. So we decided to release the software as free, in the spirit of GPL, but without the high costs on our side.

What is the best method to interface with ClamAV with MPP Free Edition?
ClamD. We have two Clam scanners - clamav and clamd. Clamav uses the clamav libraries, but for some reason this violates the GPL license and we no longer keep these libraries up to date. The libclamav interface is the best interface to Clam, but we have better things to do than fight with a large GPL organization, so we stopped keeping libclamav up to date. We recommend to use the slower ClamD scanner instead of our clamav scanner. If you use our clamav scanner you will miss viruses because the libclamav we statically link is out of date. It is worth mentioning that if you do not keep ClamD up to date you will also miss viruses, so keep clamd up to date with Freshclam.

How scalable is SpamAssassin in the SMTP path?
In 2 words - Not Very. SpamAssassin is a resource hog and, unlike ClamAV, it is far slower than commercial engines. Large ISP's will probably want to invoke SpamAssassin at the local delivery layer, as in procmail, so that it does not impede email flow when spamd gets bogged down for some strange reason. We have a number of features to improve SA scalability like limiting the max message size to scan with SA and we have verified that we can scale SA as good as any SMTP level implementation. But if you run SA in a large environment you will need a big fat machine to process the load in the SMTP path so plan accordingly.

Does MPP include all of the SpamAssassin components?
No, you need to install SpamAssassin, and with OS X, the XCode Developer Tools. See our quick SpamAssassin installation how-to. MPP interfaces with SA's 'spamd' process.