-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

While checking dmarc, we check for dkim signatures. If that fails, we
look for spf records. A very small number of those contain mx: tokens.
While chasing a bug in my code, it became obvious that almost everyone
misuses those, and they really meant to use a:some.name

So we could (do what they want) interpret mx:mail.example.com as if it
were a:mail.example.com - we won't be rejecting mail that the sending
domain intended for us to accept. But that just hides their error and
possibly increases the chances of yet more folks making the same
mistake.

What does your code do when it sees mx:mail.example.com, where there is
no mx record, but there is an a record?


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (GNU/Linux)

iEYEAREKAAYFAlrOgRIACgkQL6j7milTFsHgpQCeMBsUmcz/5adrHRFZ3X5vrfL8
2QkAoIRxFWUB1Ln5DTQbsnOAsDWz39Cu
=6wlm
-----END PGP SIGNATURE-----



_______________________________________________
mailop mailing list
mailop@mailop.org
https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop

Reply via email to