Stefan Bauer:
Am Sonntag, 9. September 2018 schrieb Wietse Venema :Instead, you can use transport_maps to choose between different Postfix SMTP clients (with different configurations) based on the recipient address or domain. You can use the access map or header/body_checks FILTER action ("FILTER name-of-transport:", without a domain after the ":") to choose delivery methods based on other message properties, with some loss of elegance.I see no way to combine both. I want to enforce tls for sender1 to google.com but not for sender2 to google.com.
you may route messages from sender1 to a second postfix instance and configure that instance to enforce tls to $destination for _any_ sender Andreas
