Postfix is a High-performance mail transport agent. Upstream published versions 3.5.23 and 3.7.9.
These are bug-fix releases. The changes are not currently required for operation, but upstream strongly recommends that users update. Changes since 3.5.18 and 3.7.6 currently in bullseye and bookworm include fixes for multiple implementation defects identified since these packages were last updated, see debian/changelog for details. Of particular note is a new optional feature to prevent 'SMTP Smuggling' attacks. It is disabled by default. A configuration change is required to enable this protection [1]. If you use postfix, we recommend that you install this update. [1] https://www.postfix.org/smtp-smuggling.html
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