On 7/6/2012 8:55 AM, Chris Lamont Mankowski wrote:
Murray,
The use case that I'm trying to address is when a sender is sending to
DMARC enabled receiving MTAs and also to non-DMARC enabled MTAs. My
understanding is that SPF ~all and -all (as well as ADSP) are
currently not stringently adhered to by receiving MTAs. Those
directives may only end up being a weight in the grand scheme of
things.
One would hope the SPF -all syntax is indeed respected by any MTA that
supports SPF.
If what you state is true, then when a domain holder publishes a DNS txt
RR which says "v=spf1 -all", the receiving MTA would save itself a boat
load of work by simply interpreting that correctly as what it is and
send the incoming spam message right to the bit bucket (arguably also
recording the source of the send for use in whatever crime and
punishment plan your MTA is configured to perform in response to such
behavior).
Alan M.
_______________________________________________
dmarc-discuss mailing list
[email protected]
http://www.dmarc.org/mailman/listinfo/dmarc-discuss
NOTE: Participating in this list means you agree to the DMARC Note Well terms
(http://www.dmarc.org/note_well.html)
