Re: Re: Problems with spf testsuite and dns specification
"Stuart D. Gathman" <[email protected]>
| Newsgroups | gmane.mail.spam.spf.devel |
|---|---|
| Message-ID | <[email protected]> |
On Sun, 17 Jun 2007, Stefano Bagnara wrote: > It is not about test setups. Please try to understand that you can > publish multiple identical records but you can't really predict what the > SPF clients will receive. This is IMO really bad as the SPF spec > currently require different behavior given the resolvers/caches in the > transport layer. You are absolutely correct. The 4408 mandated behaviour is essentially impossible to test for with live DNS, and produces inconsistent results depending on cache/resolver behaviour. This needs to be fixed for v=spf3. We can't change 4408 and suddenly require implementations to combine identical records. So the only reasonable course seems to be to allow both results in the test suite - reflecting the inconsistent results seen in the real worlds. It really isn't *that* bad a situation. Publishers with multiple identical records *deserve* screwy results. > > Now if you feel that RFC 4408 didn't really mean to mandate a permerror > > for multiple records when they are identical (in light of 2181), then we can > > discuss that. We can also allow both results in the test suite to reflect > > that lack of consensus. > > +1 +1 (I can vote for my own proposal?) -- Stuart D. Gathman <[email protected]> Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154 "Confutatis maledictis, flammis acribus addictis" - background song for a Microsoft sponsored "Where do you want to go from here?" commercial. ------------------------------------------- ----------------------------------------------------------------------- To unsubscribe, change your address, or temporarily deactivate your subscription, please go to http://v2.listbox.com/member/?member_id=6959932&user_secret=62b4c45f Powered by Listbox: http://www.listbox.com