Famous last words but...What's the worst that could happen? :) Whether or not you should ignore changes to whitespace and capitalization seems like a fairly trivial thing.
On Mon, Dec 12, 2016 at 1:15 PM, Maarten Oelering <maar...@postmastery.net> wrote: > DKIMCore promotes the use of simple body canocalization: http:// > dkimcore.org/deployment/dkim.html. > > Should ESPs use relaxed body canocalization instead to avoid these (rare) > validation issues? > > Thanks, > > Maarten Oelering > Postmastery > > On Sun, 11 Dec 2016 at 20:29, Steve Atkins <st...@blighty.com> wrote: > >> > >> >> > On Dec 11, 2016, at 8:53 AM, Dave Crocker <d...@dcrocker.net> wrote: >> >> > >> >> > On 12/10/2016 8:08 AM, Al Iverson wrote: >> >> >> Suggestion...modify the template to remove all the tabs or replace >> >> >> them with spaces, and try again. If it passes on both, then you've >> >> >> found that something in the delivery path is replacing tabs with >> >> >> spaces, invalidating the DKIM signature. >> >> > >> >> > >> >> > The original DKIM header field seems to show use of 'relaxed' which >> ought to make sp/tab transformations transparent. >> >> > >> >> > "Convert all sequences of one or more WSP characters to a single SP >> >> > character." >> >> > >> >> > hmmm... >> >> >> >> c=relaxed is identical to c=relaxed/simple, so these messages sent with >> c=relaxed are sensitive to whitespace changes in the body. >> >> >> >> (Not the first time I've seen this, and it's arguably a usability bug in >> the DKIM spec.) >> >> >> >> Cheers, >> >> Steve >> >> _______________________________________________ >> >> mailop mailing list >> >> mailop@mailop.org >> >> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >> >> > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop > > -- Luke Martinez Team Lead | Email Delivery 520.400.5693
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