In addition to a batch of updates, new features, and fixes, there are several important security updates provided in this release. Details on these fixes are in the release notes linked above. We recommend that all RT users upgrade to get these security updates.
Note that in addition to upgrading to this new version, access to the mail-gateway REST endpoint can, and in most cases should, be restricted to only the RT server itself (localhost). This access restriction can typically be applied in the web server running with your RT (Apache or other). This configuration is more clearly documented as part of this release and we recommend all RT admins review your web server configuration and consider restricting access to this mail-gateway REST endpoint.
As you plan your upgrade, note that the 4.4 series is very much in maintenance mode and receiving only important bug fixes. We are not announcing the end of life yet, but if you are still running version 4.4, you should start working on your plans to upgrade to RT 5. Plus you’ll get a bunch of new features!
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