nanog mailing list archives

Re: NANOG List posts and DMARC


From: John Levine via NANOG <nanog () nanog org>
Date: 2 Aug 2022 16:31:46 -0400

It appears that Michael Thomas via NANOG <mike () mtcc com> 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.

R's,
John


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