Hello.

For a month or so i struggle with occasional such reports, as
below.  The log of the last is like

  Jun  9 01:38:05 postfix/smtpd[17007]: warning: hostname 
hosted-by.rootlayer.net does not resolve to address 45.137.22.84
  Jun  9 01:38:05 postfix/smtpd[17007]: connect from unknown[45.137.22.84]

So this would not normally be able to post, it would result in
rejection like

  Jun  9 00:43:50 postfix/smtpd[15761]: NOQUEUE: reject: RCPT from unknown[.]: 
504 5.5.2 <..>: Helo command rejected: need fully-qualified hostname ..

However, somehow this is circumvented here

  Jun  9 01:38:06 postfix/smtpd[17007]: B713116056: client=unknown[45.137.22.84]
  Jun  9 01:38:06 postfix/cleanup[17011]: B713116056: 
message-id=<20210608163805.e242f6fe5d7ac...@sdaoden.eu>
  Jun  9 01:38:06 postfix/qmgr[2581]: B713116056: from=<stef...@sdaoden.eu>, 
size=2828, nrcpt=1 (queue active)

Well this is faked, but .. nothing is actually enqueued for
sending anyhow..

  Jun  9 01:38:06 postfix/smtpd[17007]: disconnect from unknown[45.137.22.84] 
ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
  Jun  9 01:38:07 postfix/local[17012]: B713116056: to=<stef...@sdaoden.eu>, 
relay=local, delay=2.1, delays=1.3/0.01/0/0.83, dsn=2.0.0, status=sent 
(delivered to mailbox)

This i do not parse, too, actually, no such mail happens to
happen.

  Jun  9 01:38:07 postfix/cleanup[17011]: A5B3516059: 
message-id=<20210608233807.a5b3516...@sdaoden.eu>
  Jun  9 01:38:07 postfix/qmgr[2581]: A5B3516059: from=<>, size=2213, nrcpt=1 
(queue active)
  Jun  9 01:38:07 postfix/bounce[17013]: B713116056: sender delivery status 
notification: A5B3516059

So here a delivery status is generated, and i do not know why or
how i could disable this.

  Jun  9 01:38:07 postfix/qmgr[2581]: B713116056: removed
  Jun  9 01:38:07 postfix/local[17012]: A5B3516059: to=<stef...@sdaoden.eu>, 
relay=local, delay=0.03, delays=0.01/0/0/0.02, dsn=2.0.0, status=sent 
(delivered to mailbox)
  Jun  9 01:38:07 postfix/qmgr[2581]: A5B3516059: removed

So all _i_ find in the inbox then is a delivery report as below.
Is this a misconfiguration on my side, what can i do to avoid this
problem?

Thank you, and Ciao from Germany,

--- Forwarded from (Mail Delivery System) <mailer-dae...@sdaoden.eu> ---
From MAILER-DAEMON  Wed Jun  9 01:38:07 2021
Return-Path: <>
X-Original-To: stef...@sdaoden.eu
Delivered-To: stef...@sdaoden.eu
Received: by sdaoden.eu (Postfix) id A5B3516059; Wed, 9 Jun 2021 01:38:07 +0200 
(CEST)
Date: Wed, 9 Jun 2021 01:38:07 +0200 (CEST)
From: mailer-dae...@sdaoden.eu (Mail Delivery System)
Subject: Successful Mail Delivery Report
To: stef...@sdaoden.eu
Auto-Submitted: auto-replied
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status; 
boundary="B713116056.1623195487/sdaoden.eu"
Message-Id: <20210608233807.a5b3516...@sdaoden.eu>
Status: RO


Content-Description: Notification
Content-Type: text/plain; charset=us-ascii

This is the mail system at host sdaoden.eu.

Your message was successfully delivered to the destination(s)
listed below. If the message was delivered to mailbox you will
receive no further notifications. Otherwise you may still receive
notifications of mail delivery errors from other systems.

                   The mail system

<stef...@sdaoden.eu>: delivery via local: delivered to mailbox

Content-Description: Delivery report
Content-Type: message/delivery-status


Content-Description: Message Headers
Content-Type: text/rfc822-headers

Return-Path: <stef...@sdaoden.eu>
Received: from sdaoden.eu (unknown [45.137.22.84])
        by sdaoden.eu (Postfix) with ESMTP id B713116056
        for <stef...@sdaoden.eu>; Wed,  9 Jun 2021 01:38:05 +0200 (CEST)
From: Mail Delivery Report <stef...@sdaoden.eu>
To: stef...@sdaoden.eu
Subject: [Warning Notice]: stef...@sdaoden.eu Verification Required
Date: 8 Jun 2021 16:38:05 -0700
Message-ID: <20210608163805.e242f6fe5d7ac...@sdaoden.eu>
MIME-Version: 1.0
Content-Type: text/html;
        charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
 -- End forward <20210608233807.a5b3516...@sdaoden.eu>

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)

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