On Thu, 29 Jan 2004, wayne wrote:
: Y> http://spf.pobox.com/draft-mengwong-spf.02.9.5.txt
:
: I think "encounters" means "received an SPF record", rather than "a
: token in the SPF record when parsing left to right."
My interpretation was the latter meaning (token-based); otherwise there
would be no point to allowing extensions. SPF is an ordered-rule based
system, so tokens are typically taken as individual entities one at a time.
This jives with part of what was quoted earlier:
Unrecognized mechanisms cause processing to abort: if an SPF client
encounters a mechanism which it does not understand or which it
cannot properly evaluate (due perhaps to insufficient information
about the mail message), then it terminates processing and returns
"unknown".
What would be the point about "(...insufficient information about the mail
message)", in regards even to existing mechanisms, if you aborted before
even processing the record?
This could be made explicit in the document. MMW, a suggested edit to make
this clear:
Unrecognized mechanisms cause processing to abort: if
add>> , during processing of an SPF record,
an SPF client encounters a mechanism which it does not understand or
which it cannot properly evaluate (due perhaps to insufficient
information about the mail message), then it terminates processing
and returns "unknown"
add>> , without processing any further mechanisms
.
--
-- Todd Vierling <tv(_at_)duh(_dot_)org> <tv(_at_)pobox(_dot_)com>
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