"One of the most significant highlights of #Postfix 3.10 is its forward compatibility with OpenSSL 3.5 post-quantum #cryptography. Administrators can manage algorithm selection directly through the new “tls_eecdh_auto_curves” and “tls_ffdhe_auto_groups” parameters. By setting these parameter values to empty, Postfix effectively defers the algorithm selection to #OpenSSL’s own configuration."
https://linuxiac.com/postfix-3-10-mta-arrives-with-openssl-3-5-support/