SpamAssassin 3.4.3 available

SpamAssassin 3.4.3 has been released. It includes a new plugin for findingmacros in Office documents, a couple of security fixes, and various otherimprovements. The project is also letting it be known that, due to thedropping of support for rulesets with SHA-1 signatures, versions ofSpamAssassin prior to 3.4.2 will no longer be able to download rule updatesas of the beginning of March.