Thanks, John - one indeed can get smarter every day; there is still enough stuff out there to become aware and to learn! ;-)

-------- Forwarded Message --------
Subject: Re: [mailop] What am I supposed to do with abuse complaints on legit mail?
Date: 17 Jan 2022 14:09:55 -0500
From: John Levine via mailop <mailop@mailop.org>
Reply-To: John Levine <jo...@taugh.com>
Organization: Taughannock Networks
To: mailop@mailop.org
CC: mailopl...@amssupport.info

It appears that Scott Mutter via mailop <mailopl...@amssupport.info> said:
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On Mon, Jan 17, 2022 at 12:06 PM Grant Taylor via mailop <mailop@mailop.org>
wrote:

Drive by comment:

What if we had something like an MX record published for the IP
address(es) in reverse DNS / <d>.<c>.<b>.<a>.in-addr.arpa for
<a>.<b>.<c>.<d> and configure those MX records to route to a mail server
of the owners / administrators of the IP (space) in question?


Do reverse DNS entries support the TXT structure?  Why not just create a
special, specific TXT record for a contact email address?

This might be a good time to review the RP DNS record.  See RFC 1183.

As far as I can tell, I am the only person in the world that still
publishes them.

R's,
John
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