Support Policy

This document outlines Sophos's policy on supported versions for PureMessage for UNIX. The version support policy is intended to help you plan for required software updates, and ensure that you are using a version of PureMessage that provides the best threat protection, reliability, and quality.

The platform support policy is designed to help you plan future platform investments for your organization, ensuring that you are running PureMessage on operating systems that are reasonably recent, supported, and secure.

If you have any questions or concerns regarding these policies, contact pureMessage-feedback@sophos.com.

Types of PureMessage Updates

There are four types of PureMessage updates (excluding data updates):
  • Major releases (such as PureMessage 5.0) introduce significant new functionality, may require upgrade/deployment planning, may contain significant changes in behavior, and may require database re-indexing or other activities that could cause downtime (though efforts are made to make upgrades as smooth as possible).
  • Minor releases (such as PureMessage 5.5) may include fixes, improvements, and new functionality. Minor releases can contain small changes in behavior, but do not require database re-indexing or other activities that could cause significant downtime. Major functionality may be introduced in a minor release, but is disabled by default.
  • Maintenance releases (such as PureMessage 5.5.3) may include fixes and small improvements. The changes in behavior are minimal, or there may be no behavioral changes.
  • Hotfixes may include security updates or other very urgent updates and may or may not represent an increment in version number. Hotfixes are not considered “versions” in the context of the version support policy.

PureMessage Version Support Policy

Sophos will support a major version (e.g., version 5) for at least 18 months from the initial release of that major version. Sophos will not discontinue a major version until the next major version has been available for at least nine months. At least three months before support for a major version is discontinued, you will be notified via an update to this document, and via a technical email bulletin.

Prior to the end of support, major versions enter a maintenance period. A major version usually enters maintenance approximately three months after the subsequent major version is released. During the maintenance phase, virus and spam data, critical software fixes, and (where possible) new anti-virus and anti-spam detection capabilities are provided, but no new features are introduced.

When support for a major version ends, Sophos may no longer provide anti-spam, anti-virus, or other updates, and technical support for that version may not be available.

Within a major version, Sophos will test and support minor or maintenance versions for a minimum of four months following that version’s release. Sophos will not end support for a previous version until a newer version has been available for at least two months. Sophos will maintain expected end-of-support dates for any minor/maintenance versions listed below.

When support for a minor/maintenance release ends, Sophos will recommend upgrading to the latest version before providing support. Testing of data and product updates may not be performed on unsupported versions (though these may still be available and may continue to work).

PureMessage Version End-of-Support Plans

Major Versions

PureMessage Release Date Status
PureMessage 6.x November 16, 2011 Supported. No end-of-support date planned.
PureMessage 5.x April 11, 2005 Supported. End of support planned for February, 2013.

Versions prior to 5.x are no longer supported. See the section below for the minor releases and maintenance releases within 5.x that are still officially supported.

Versions Within PureMessage for UNIX 5.x

PureMessage for UNIX Version Release Date Status
PureMessage version 6.0 November, 2011 Supported.
PureMessage version 5.6.1 January, 2011 Supported. End of support planned for February, 2013.
PureMessage version 5.5.9.1 March, 2010 Supported. End of support planned for February, 2012.
PureMessage version 5.5.9 November, 2009 Support ended December 31, 2010.
PureMessage version 5.5.8 September, 2009 Support ended December 31, 2010.
PureMessage version 5.5.7 June, 2009 Support ended December 31, 2010.
PureMessage version 5.5.6 June, 2009 Support ended December 31, 2010.
PureMessage version 5.5.5 May, 2009 Support ended December 31, 2009.
PureMessage version 5.5.4 April, 2009 Support ended December 31, 2009.
PureMessage version 5.5.3 March, 2009 Support ended December 31, 2009.
PureMessage version 5.5.2 February, 2009 Support ended December 31, 2009.
PureMessage version 5.5.1 December, 2008 Support ended December 31, 2009.
PureMessage version 5.5 November, 2008 Support ended December 31, 2009
PureMessage version 5.4.6 September, 2008 Support ended December 31, 2009.

Versions prior to 5.5.5 are no longer supported.

PureMessage Platform Support

Sophos platform support is designed to help you plan future platform investments for your organization, ensuring that you are running PureMessage on operating systems that are reasonably recent, supported, and secure.

For a list of supported operating systems, see the Sophos "Software lifecycle" web page at http://www.sophos.com/support/lifecycle/puremessage.html.