I am the main Postfix author. At this time, there is no MTA-STS support in the software that is distributed by the Postfix project.
The postfix-mta-sts-resolver software is a third-party extension that is developed and maintained separately from Postfix. I suggest that you contact their authors directly. Wietse _______________________________________________ Postfix-devel mailing list -- postfix-devel@postfix.org To unsubscribe send an email to postfix-devel-le...@postfix.org