Wietse Venema via Postfix-users:
> On systems that systems disable set-gid privilege elevation, Postfix
> may use an alternative privilege elevation method that is implemented
> with a new postlift(8) service. As of Postfix 3.12, this alternative
> method is supported only on Linux environments using systemd.
> ...
> https://www.postfix.org/NO_NEW_PRIVILEGES_README.html#postlift
> https://www.postfix.org/postlift.8.html
This is now available as a production release from Postfix source-code
mirrors as postfix-3.12-20261020.tar.gz plus digital signatures.
NO_NEW_PRIVILEGES_README.html has a "future work" section that
speculates how one might run this with reduced functionality on
*BSD, MacOS, and Solaris. This would require additional new code.
Wietse
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