On Wed, Aug 16, 2017 at 5:47 PM, Bron Gondwana <br...@fastmailteam.com> wrote:
> While there exists A SINGLE SITE which is ARC-unaware and DMARC p=reject > aware, you can't use ARC on a DMARC p=reject domain without rewriting the > sender. Otherwise that site will bounce the email. > > Goodness, it's a wonder that we've ever successfully deployed anything incremental around here. ;-) -MSK
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