[dmarc-discuss] policy overrides and 'what-if'

[Michael Adkins]

With the exception of 'sampled_out'.  That should always be fairly
consistent based on the percentage you set in your record.

On 4/5/12 12:27 PM, "Paul Midgen" <pmidge at microsoft.com> wrote:

>I would add the general guidance to Ben and others seeking to do the same
>thing that the policy override is the result of receiver-side local
>policy, subject to change without notice.
>
>So, one could model the behavior of individual receiver systems (e.g. in
>case X Hotmail does Y and Gmail does Z) but I think it's probably a
>better idea to:
>
>a) assume that the policy override decision is independent of p=, AND
>b) provide some kind of "this is a best guess and YMMV based on receiver"
>advisory text.
>
>-p
>
>-----Original Message-----
>From: Michael Adkins [mailto:madkins at fb.com]
>Sent: Thursday, April 05, 2012 10:33 AM
>To: Ben Clifford; Paul Midgen
>Cc: dmarc-discuss at dmarc.org
>Subject: Re: [dmarc-discuss] policy overrides and 'what-if'
>
>Ah, interesting point.  As Paul mentioned, there will be a list of all
>the expected override types.  It might take a little more operational
>experience before we can conclusively say we've covered them all, but I
>think we should make the effort to document an exhaustive list in the
>spec.
>
>The answer to your question seems like the sort of thing we should
>include in an operational guidelines document for domain owners, but I
>don't think we've documented them yet.
>
>
>
>
>On 4/5/12 5:30 AM, "Ben Clifford" <benc at cqx.ltd.uk> wrote:
>
>>
>>On Apr 5, 2012, at 8:03 PM, Paul Midgen wrote:
>>
>>> I may be missing your point about the information you'd rather have,
>>>but when a PolicyOverrideReason is present, the disposition associated
>>>with it is the result of the override. For example, if you have
>>>p=reject and mailing_list is present, you could expect to find
>>>disposition == none. Are you asking about something else?
>>
>>
>>I'm asking about how I can infer what the disposition likely would be
>>in a what-if.
>>
>>Hypothetically:
>>
>>I have p=none, but I am doing a what-if for p=reject.
>>
>>I see records with disposition=none, and DKIM and SPF all failing, and
>>policy override reason = mailing_list.
>>
>>Intuitively I can say "ok, this is safe - it will still be a
>>disposition = none when you change the policy".
>>
>>I see records with disposition=none, and DKIM and SPF all failing, and
>>policy override reason = sampled_out.
>>
>>Intuitively I can say "oh dear, if that message wasn't sampled out,
>>this message would be a disposition = reject".
>>
>>The only difference in those two reports is the policy override reason
>>token.
>>
>>So where do I get the meanings for how I should do the above two
>>what-ifs differently?
>>
>>Should I be expecting to get that from the spec, or should I be trying
>>to maintain my own table based on my own observations?
>>
>>Ben
>>
>>--
>>
>>
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>
>
>