IMF Tune v7.1 - Bringing Back the Exchange Connection Filter
New IMF Tune Build - Important DNSxL Updates
A new IMF Tune build is now available for download.
IMF Tune v7.1 build 188.8.131.52 includes an important fix to the DNSxL functionality. We recommend all IMF Tune v7.x users to upgrade to the latest build.
Fixed DNSxL Processing Component
We identified a case where emails managed to bypass DNSxL processing. This may happen when spammers repeatedly send the same spam email. On encountering the email for the first time IMF Tune correctly applies DNSxL processing and caches the results.
On processing identical spam emails, a failure to correctly read the DNS cache could lead email processing to skip DNSxL filtering. The emails would still be processed by all other filtering stages but the final SCL rating would not comprise the DNSxL results.
This problem is now fixed and we encourage all IMF Tune users to upgrade.
This information applies to IMF Tune v7.1 build number 184.108.40.206. If IMF Tune is already installed you can verify the current build number from the configuration interface under the Miscellaneous category.