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by medmunds
3655 days ago
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Implemented all of these on a bunch of my domains a few weeks ago. Two cautions related to whether your email can be forwarded by your recipients: 1. SPF -all can break forwarding with DMARC p=reject. If your recipients tend to forward your email, you probably want to stick with SPF ~all (or DMARC p=none) until standards settle (and get widely implemented) around rewriting headers during forwarding. [1] 2. Hotmail and Outlook.com recently introduced a change that breaks forwarding from any DMARC p=reject or p=quarantine sender, through a hotmail.com or outlook.com address, to any recipient MTA that enforces DMARC. There's not really anything you can do about this (as a sender) other than not use DMARC, so hopefully that gets fixed soon. [2] [1]: https://blogs.msdn.microsoft.com/tzink/2015/07/12/what-is-th... [2]: https://blogs.msdn.microsoft.com/tzink/2016/05/19/why-does-m... |
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