Re: Mailing list SPF Failure

["John Levine" <johnl () iecc com>]

It appears that Michael Thomas <mike () mtcc com> said:
> On 5/16/24 8:11 AM, Peter Potvin via NANOG wrote:
> > Appears there’s no SPF record at all now for nanog.org 
> > <http://nanog.org>, which is not ideal…
>
> Since probably 99% of the mail from NANOG is through this list, it 
> hardly matters since SPF will always fail.

Sorry, but no. A mailing list puts its own envelope return address on
the message so with a reasonable SPF record, SPF will normally
succeed. (If the mail is subsequently forwarded SPF will fail, but
that's not unique to mailing lists.)

DKIM and DMARC do not get along with mailing lists, but SPF is OK, at
least as OK as SPF ever is.

tl;dr nanog needs to put back its SPF record. It'll make some systems
such as Gmail considerably more likely to accept the mail.

R's,
John