Le 10 mars 2023 Jeremy Ardley a écrit : > |postconf mail_version mail_version = 3.5.17 | > But with a 'long matured' main.cf
Proof of quality for postfix on debian :) > smtpd_helo_restrictions = > permit_mynetworks > permit_sasl_authenticated > reject_invalid_helo_hostname > reject_non_fqdn_helo_hostname > reject_unknown_helo_hostname > > Is it requred to remove the reject_invalid_hostname and > reject_non_fqdn_hostname from smtpd_recipient_restrictions ? Not required, but since you check the same first in helo you don't really need it during recipient tests if you set : smtpd_helo_required = yes else helo can be skipped. And if you dont require helo, restrictions can easily be bypassed. https://www.postfix.org/postconf.5.html#smtpd_helo_required Choose your best way :)
