April 23, 2008
Summary
=======
Sophos is pleased to announce the availability of PureMessage for UNIX 5.4.2, which contains various fixes and improvements.
Details
=======
Improvements/fixes in PureMessage 5.4.2 include:
* A new report, Rejected MTA Connections, is available via the Groups Web Interface. This report shows the number of connections rejected as a result of MTA-level IP blocking. (SUG10361)
* A new column displaying the serial number for each PureMessage component has been added to the Licensed Components page of the Support tab. These numbers are helpful to Sophos support, in the event that you need assistance. (SUG10623)
* Due to a limitation in PureMessage, lists associated with Administrative Groups could not be automatically synchronized with the PostgreSQL database. This has been fixed, although some manual steps may be required if you are running the Groups Web Interface as part of a multi-server deployment. If additional steps are necessary, a message to this effect will be displayed after you upgrade to version 5.4.2. Follow the on-screen instructions to resolve any differences between the versions of group list files stored in the database and the group list files stored on edge servers. (DEF09637)
* The pmx-logsearch-index background service was consuming an excessive amount of processing power due to a loop function that was continuously checking for new entries in the mail and message logs. This was most noticeable on systems with a large numbers of logs but without a constant mail flow.
Additionally, the index_expire_days setting in logsearch.conf had no effect, regardless of the number of days specified. As a result, log search data would accumulate until it reached the specified size limit. This service no longer uses too much processing power, and the log search indexes are expired every seven days by default. (DEF20234)
* There was sometimes a difference in the total messages displayed in the Spam Range Volumes and Message Categorization reports for the same time period. This occurred because messages that PureMessage deemed to be 100 percent spam were not included in the Spam Range Volumes report. This has been fixed. (DEF09266)
* In cases where the message body or message headers are altered or removed during processing, PureMessage now assigns a new Message-ID header. This change was made to improve RFC compliance. (DEF19630)
* Previously, if you were using PureMessage in conjunction with the Java System Messaging Server (JSMS) mail transfer agent, messages could become trapped in the JSMS mail queue, where JSMS would continue indefinitely in its attempt to resend the messages. This occurred in instances when the MTA was attempting to pass messages to the PureMessage milter and the milter was unresponsive. If this occurs now, JSMS will attempt to resend according to the intervals specified in the backoff setting of the imta.cnf configuration file in JSMS. (DEF17471)
* Various other fixes and improvements.
The release notes, which contain additional information on the changes, can be found here:
http://pminfo.sophos.com/pmchanges
Recommendations
===============
Sophos strongly recommends that customers running PureMessage 5.x perform this update.
If you haven’t already done so, Sophos also recommends reviewing the version/platform support policy, located here:
http://pminfo.sophos.com/pminfo/docs/PureMessage/version_platform.html
For best anti-spam performance, Sophos recommends that you use IP Blocker at the MTA level to reject messages or in the policy layer to discard, tag or quarantine messages from known bad senders.
Upgrading from PureMessage 5.3.3+
=================================
Sophos strongly recommends reviewing the release notes and upgrade instructions in detail prior to updating. PureMessage 5.x customers can install all updates by performing the following steps:
1. As the PureMessage user (‘pmx’ by default), run
‘pmx-service stop smtp’ and ‘pmx stop’.
2. As the root user, run ‘/opt/pmx/bin/pmx-setup’.
** If you are upgrading from a PureMessage version prior to 5.4.x, this release includes a new version of pmx-setup to support signed downloads. Sophos very strongly recommends updating your copy of pmx-setup to the latest version. **
Using the menus, select ‘Upgrade PureMessage Components’, ‘Check for updates’, then ‘Upgrade components’.
3. As the PureMessage user, run ‘pmx start’ and ‘pmx-service start smtp’.
Detailed information on updating PureMessage 5.3.3 and up (including from tarballs) is available here:
http://pminfo.sophos.com/pminfo/docs/PureMessage/5.4/upgrade.html
If you encounter any issues with PureMessage during this update,
technical support is available at:
http://www.sophos.com/support/queries/enterprise.html
Best Regards,
Sophos Technical Support
Sophos – security and control
Over 100 million business users in over 150 countries rely on security and control solutions from Sophos
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[tags]sophos[/tags]