The use case is only for mx service so there will be only incoming mail for same domain in same smtp session.
I assume that remote mail servers will not combine mail delivery in same smtp session when destination domains differ (even though they have same mx) Stefan Am Mittwoch, 28. November 2018 schrieb Wietse Venema : > Stefan Bauer: >> Hi, >> >> is there a way to keep an smtp session open and do before queue filtering >> AND final delivery to remote mta? do only sent 250 if we have already >> received 250. if not send temp error. > > How would that work when one message has more than one recipient? > In different domains? When one domain accepts the message, and the > other tempfails? What status would Postfix return to the SMTP client? > >> we would like to only accept mails if we can deliver them at the same time. >> a local queue is not wanted due to privacy reasons. > > Use a proxy that accepts one recipient at a time. > > Wietse >
