I have a question about the following in the RFC:
8.4 Conformance with regard to receiving e-mail systems
...
Receiver systems SHOULD exclude special recipients such as
postmaster@ and abuse@ from SPF processing. See RFC2142.
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Why would the postmaster@ or abuse@ not want to have the SPF headers added and
be notified of the status of SPF processing? I think it could actually be
especially helpful in diagnosing problems.
However, I could see the special recipients addressed in section 8.8, perhaps
something like this:
8.8 Rejection of SPF conformant email
An SPF email system MAY choose to reject or discard email on the
basis of local policy. SPF is one component in an overall
email-policy engine. SPF merely makes it possible for policy
decisions to be made with confidence at the sender-domain level. The
actual policy decisions are outside the scope of this document.
It is RECOMMENDED that an SPF email system not reject or discard
email with special recipients such as postmaster@ and abuse(_at_)(_dot_)
See RFC2142.
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