Quoting "Peter", who wrote on 2019-10-09 at 23:16 Uhr +1300:
Wrong test that's the smtpd banner. The EHLO banner is specified in the smtp_helo_name setting and is sent when postfix makes a client connection to another server, not when you make a connection to postfix.
Oh, I should have known that. Still, I assume yes: ambassador:~% sudo postconf smtp_helo_name smtp_helo_name = $myhostname ambassador:~% sudo postconf myhostname myhostname = ambassador.madduck.net -- @martinkrafft | https://riot.im/app/#/room/#madduck:madduck.net "da haben wir es also: eine kirchliche ordnung mit priesterschaft, theologie, kultus, sakrament; kurz, alles das, was jesus von nazareth bekämpft hatte..." - friedrich nietzsche spamtraps: madduck.bo...@madduck.net
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