:: [DNG] sender address rejected
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Autore: Haines Brown
Data:  
To: dng
Oggetto: [DNG] sender address rejected
I don't seem to be having trouble with email (exim4, mutt) other than
with popcorn nessages:

> Date: Mon, 02 Dec 2019 14:31:13 -0500
> From: Mail Delivery System <Mailer-Daemon@???>
> To: root@???
> Subject: Mail delivery failed: returning message to sender
>
> [-- Attachment #1 --]
> [-- Type: text/plain, Encoding: 7bit, Size: 0.5K --]
>
> This message was created automatically by mail delivery software.
>
> A message that you sent could not be delivered to one or more of
> its recipients. This is a permanent error. The following
> address(es) failed:
>
>    survey@???
>      host mail.guardedhost.com [2607:fe90:1:1::1e]
>      SMTP error from remote mail server after pipelined 
>  MAIL FROM:<root@???> SIZE=27878 AUTH=root@???:
>      553 5.7.1 <root@???>: Sender address rejected:
>      not owned by user brownh@???

>
> [-- Attachment #2 --]
> [-- Type: message/delivery-status, Encoding: 7bit, Size: 0.3K --]
>
> Reporting-MTA: dns; engels.histomat.net
>
> Action: failed
> Final-Recipient: rfc822;survey@???
> Status: 5.0.0
> Remote-MTA: dns; mail.guardedhost.com
> Diagnostic-Code: smtp; 553 5.7.1 <root@???>: Sender
> address rejected: not owned by user brownh@???
>
> [-- Attachment #3 --]
> [-- Type: message/rfc822, Encoding: 7bit, Size: 25K --]
>
> Date: Mon, 02 Dec 2019 14:31:10 -0500
> From: root <root@???>
> To: survey@???
> Subject: popularity-contest submission
>
> -----BEGIN PGP MESSAGE-----
> ...


It seems popcorn messages are sent by root, but the root address is
not owned by user. How can I straighten this out? What defines address
ownership?

Haines Brown