Meng Weng Wong wrote:
3) Each configuration directive represents a different approach to
answering the "is this client for real" question.
"permit:mx; permit:a=designated-mailers.DOMAIN; permit:spf;
include:OTHERDOMAIN; deny:default"
Would it be feasible to also include a way to reference authorized
mailers by a name pattern:
like: *.mx.lao.com (either through something like
"permit:pat=*.mx.lao.com" in the spf config._smtp_client.... record, or
something lie
"permit:ptr=some.domain", and the list of patterns would in PTR record
at some.domain).
For big domains, that could simplify maintenance of the SPF/MX lists by
simply adopting a coherent naming strategy for the mailers.
Moreover during a transition/deployment period, this might provide a
good way for a third party to publish SPF data in a fallback domain for
a given ISP( because usually they already have such a coherent naming).
Loic
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