pacacc I can confirm that
Mail never shows up in inbox
It seems to me sending mails without using the relay host is not working out of the box
Gonna test this one
[2021-09-22 19:26:01.655400]: connect from localhost[::1]
[2021-09-22 19:26:01.681321]: A6418ED4E: client=localhost[::1]
[2021-09-22 19:26:01.683434]: A6418ED4E: message-id=<450296c520e1a44cafaaea5631b54259@localhost>
[2021-09-22 19:26:01.697250]: A6418ED4E: from=user@tld.com, size=1327, nrcpt=1 (queue active)
[2021-09-22 19:26:01.697851]: disconnect from localhost[::1] helo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
[2021-09-22 19:26:01.732417]: A6418ED4E: to=user.user@tld.com, orig_to=user.1@tld.com, relay=::1[::1]:24, delay=0.06, delays=0.02/0.02/0/0.02, dsn=2.0.0, status=sent (250 Ok queue-id: 10)
[2021-09-22 19:26:01.733065]: A6418ED4E: removed
mail is not showing up in inbox of user.1@tld.com