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The Message Sniffer software is designed to be installed on an email server or filtering appliance. Message Sniffer is driven by a professionally managed rulebase, available via subscription, that is continuously monitored and updated by intelligent machines and highly trained analysts. This teamwork between synthetic intelligence and extraordinary people reduces your administrative workload to a minimum and allows SNF to respond quickly (within minutes) to new threats while also predicting future hazards so they can be blocked before they arrive.

The Message Sniffer software has two components: SNFServer and SNFClient. SNFServer provides message scanning and collaborative IP reputation services (GBUdb) via the XCI protocol. GBUdb responds quickly to emerging threats and saves system resources by providing IP blocking information and modifying message scan results in real-time. SNFClient provides a command line interface to SNFServer via the XCI protocol. The SNFClient utility can be used to connect SNFServer to virtually any email server or filtering system that supports external antispam and antivirus tools.

SNF accurately captures more than 99% of spam without tuning. We calculate this statistic from real-world data collected by our monitoring system using system telemetry, data from spam-traps, user submissions and a comparative analysis with several dozen high quality spam tests.

In addition, Message Sniffer's highly optimized engine has very modest hardware requirements and typically uses only a small fraction of the resources required by other engines. (SNF typically has less than 10% of the CPU requirement of SpamAssassin when processing the same message stream!)

Message Sniffer is used by ISPs, ASPs, SaaS providers, spam filtering services, antispam appliance vendors, schools, businesses, and consultants worldwide to protect systems from spam, scams, viruses, and other email borne threats.

Learn More about what Message Sniffer is and how it works.

We have designed Message Sniffer (SNF) to be a complete anti-spam solution for your email servers. Let us help you reduce the time and effort you spend dealing with spam.

Anti-Spam & Anti-Virus Anti-Malware & Anti-Spyware Anti-Spoofing & Anti-Phishing Automated Tuning Collaborative Learning Multi-Platform No Per User License Fee Free Responsive Support

Fail Safe Design Strategy Low False Postive (FP) Rate Interactive FP Resolution Process High Availability, Continuous Monitoring Highly Adaptive Rulebase System Continuous Automated Updates Works With ANY Email Server Low Use of System Resources

Read more about the Full List of SNF Features.

Get the Windows Installer

Requires Basic Sniffer Install:

• Use the SNF_CS_Installer. Select MDaemon Plugin Option
• Complete the system install which installs a subset of the base sniffer files:
  • All Curl files (Curl.exe, CurlMANUEL.rtf, CURLReadme.rtf)
  • InstallInstructions_MDaemon.txt (for manual install or double check)
  • Installer Files (Restorer.exe, uninstall.exe, LocalRoot.txt, shortcuts.xml)
  • MDaemon Plugin Files (snfmdplugin.dll, snfmdplugin.xml)
  • SNF Files (SNFClient.exe, SNFClient_readme.txt, **License**.snf)
  • Required Files (identity.xml, getRulebase.cmd, snf2check.exe, mingwm10.dll)
  • AuthenticationProtocol.swf
  • ChangeLog.txt
  • GBUdbIgnorelist.txt
  • InstallInstructionsMDaemon.txt
  • License.txt
  • The SNFRollback folder, at the root level w/ Archive_rllbck.log and some duplicate files.
• Usual location will be in ~MDaemon\SNF folder, but it can be installed at the user's discretion. No unusual edits to the SNF install are required.
• Refer to the Installer tutorial to confirm settings for rulebase download if other than default. (Automatic is the default for Installer.)
• Refer to SNF Documentation for info on setting custom header injection. (Requires edit of snf_engine.xml)

In addition to installing Sniffer, the Installer will have done the following:

Added a Plugin Reference:

Installer edits the MDaemonRoot\App\plugins.dat

• Adds-to or creates the file as necessary.
• Inserts, removes or edits the [plugin section] titled [SNF]
• Defines the path to the Sniffer DLL.
• Data Format: Text Manually Editable: YES, with ease.

Adds the SA definition

Installer inserts the file: ~MDaemon\SpamAssassin\rules\snf-groups.cf

• Installation inserts the file.

Your Message Sniffer subscription comes with free support to help get Message Sniffer installed on your system.

Get the Windows Installer

Use this guide to assist in a fresh install of the MDaemon Plugin, or an upgrade to V3.0.

1. Download the SNF_CS_Installer.exe from the Downloads page.
2. Execute the Installer, and follow the SNF Install Tutorial for the MDaemon Install option.
3. Either have the Installer restart MDaemon, or restart MDaemon at your convienence.

The Technical Summary lists the files that will be placed in the folder you designate for installation as well as the additional files the Installer will be required to touch. The Installer will restart the MDaemon service if you let it.

This version of the Installer uses Curl as the transport mechanism for the rulebase update feature. If you are updating to v3.0, you should either discontinue your current mechanism, or set the rulebase update feature to off. (We strongly recommend migrating to the Curl platform since it explicitly handles the server-file, local-file time stamp conflict.)

If you are upgrading from an earlier version of Sniffer, the SNF_CS_Installer.exe will duplicate copies of any original files which have the same name as a file in the new version, and store them in a folder called SNFRollback (specifically, the MDaemon Plugins.dat file reference and any original .dll files, etc.). If you need to rollback your upgrade for any reason, you may execute the Installer again, browse to your install location, and select Uninstall. The SNF_CS_Installer will work through the rollback file, remove any files belonging only to the new version and return the original files to their proper locations.

For more information about the software for the MDaemon Plugin, please visit the Software section of the Documentation.