On 19/05/2026 03:41, John R Levine via mailop wrote:
Also, as an responsible admin, I *should* be looking at bounces, but
why should I have to keep seeing bounces when I'm trying to send
someone something that they implicitly asked for but are too clueless
to make work?
See above. Our time is limited, flushing bounced DMARC reports to /dev/
null is cheap and easy. As I have often noted, the total bandwidth all
of our mail users is tiny compared to a typical cat video. It's just
not worth worrying about.
Indeed, a web query to
https://stalemarc.measurement.network/api/checkRua.php may well consume
more bandwidth than an SMTP attempt. However, it will prevent a 5xx
error in the mail log.
BTW, after Randolf explained the probing process, I found four of them
in my aggregate reports folder. They started after I tested their email
deliverability report. Each one of their blank aggregate reports was
followed by a 1-liner one from me on the next day, reporting their
message. Obviously, their uniq From: domain must have had a DMARC
record with rua=.
Best
Ale
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