DMARC
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TLDR[edit | edit source]
You need to have SPF and DKIM properly established first.
(assuming your domain is 'example.com') Publish a DNS TXT record with this label[1]:_dmarc.example.com
and this valuev=DMARC1; p=none; rua=mailto:postmaster@example.com;
try http://kitterman.com/dmarc/assistant.html
Background[edit | edit source]
IETF Specification[edit | edit source]
https://tools.ietf.org/html/rfc7489
Vendors[edit | edit source]
https://dmarcian.com/ is a place where you can get your reports nicely aggregated and reported. See their video about DMARC benefits
Tools[edit | edit source]
dig any _dmarc.example.com +trace
See Also[edit | edit source]
Add a DMARC record in Google support
References[edit source]
- ↑ Namecheap has a particular quirk where the 'label' (or host) portion of the TXT record should just be '_dmarc' and their system will append the domain for you.
