Re: Problems with spf testsuite and dns specification

Julian Mehnle <[email protected]>
Newsgroups gmane.mail.spam.spf.devel
Message-ID <[email protected]>
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Stuart D. Gathman wrote:
> On Tue, 12 Jun 2007, Julian Mehnle wrote:
> > Stuart, do you see any reason why having such tests with multiple
> > _identical_ -- as opposed to merely multiple, but differing -- SPF
> > records is important?
>
> *Especially* if there is logic invoked only upon duplicates, you want
> to check for a correct result.  If the spec should not have an errata
> for this, then the best resolution is probably to allow both results for
> duplicate records.

No -- assuming this isn't something the SPF spec should care about, then 
why is this something the test suite needs to check?  Doesn't it suffice 
to check only the weaker case where multiple but differing records exist?  
(After all, the case is not weaker from SPF's PoV, only from that of DNS.  
But we aren't testing the correctness of DNS, just that of SPF.)  What 
does checking the multiple-identical-records case give us that checking 
the weaker case doesn't?

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