Re: Mail-Transmitter RR

[Mathias Koerber <mathias@koerber.org>]

> understood and agreed.  however, i can't think of a less onerous way for a
> domain holder to protect themselves against forgery of this kind, and i
> see forgery of this kind as a huge huge huge source of domain-holder pain.

Neither can I, but my point is that this approach should be combined
with whatever (authenticatable) indication the SMTP folx can come up
with between first incoming MX and further MX hosts into one document,
as this will only be useful if the SMTP server side is properly defined.

mk


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