NANOG List posts and DMARC

Jared Mauch jared at
Tue Aug 2 20:41:53 UTC 2022

> On Aug 2, 2022, at 4:31 PM, John Levine via NANOG <nanog at> wrote:
> It appears that Michael Thomas via NANOG <mike at> said:
>> On 8/2/22 12:30 PM, Jim Popovitch via NANOG wrote:
>>> It's been doing it for ages for p=reject, but not p=none (the latter
>>> being Jared's situation)
> I don't understand Jared's concern.  His DMARC policy, like mine, is p=none
> which tells receivers to do nothing DMARC-y with our messages.  I don't get
> any sort of blowback from nanog posts that I can recall seeing.
>> I'm sort of surprised that an org would have p=reject when its users use 
>> outside mailing lists. 
> Unfortunately, we lost that battle a long time ago.  It's "more secure" and
> "best practice" so go away.

Much like inline replies v top-posting and etc.. 

I did manage to get someone to flip the setting so hopefully I’m not getting a lot of bounce back from this e-mail.

Thanks to the kind soul who flipped the setting.

- jared

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