SMTP over IPv6 : gmail classifying nearly all IPv6 mail as spam since 20140818
Brian E Carpenter
brian.e.carpenter at gmail.com
Sat Aug 23 23:32:59 CEST 2014
On 24/08/2014 09:20, Marco d'Itri wrote:
> On Aug 23, Brian E Carpenter <brian.e.carpenter at gmail.com> wrote:
>> Actually I think you should quibble. The issue isn't "bad" software
>> used by intermediaries, it's that by design DMARC p=reject breaks a
>> very common model used by intermediaries. Whether that is a bug or a
>> feature in DMARC is out of scope for this thread, however.
> I was not referring to the mailing lists issue, which is not relevant
> unless you also use DMARC with p=reject, but to broken MTAs which mangle
> forwarded messages (look for DKIM validation failures and you will
> easily find many).
Oh, OK, that wasn't obvious from the context.
> There is a reason if DMARC was designed to use both SPF and DKIM.
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