email delivery: DKIM & DMARC

separate from SPF in #87 (closed) as DKIM & DMARC are increasingly critical to delivery

In addition to SPF records in #87 (closed), I believe social.coop needs the following records and support for:

  1. DKIM
  2. DMARC policy

I also suggest Cloudflare for DMARC reporting (listing Cloudflare as the reporting address the DMARC policy) to monitor ongoing delivery issues.

  • add DMARC record to social.coop with DMARC reporting sent to Cloudflare
  • review DMARC reporting under p=none
  • add DKIM record for Mailgun
  • add DKIM record for Webarchitects
  • review DMARC reporting under p=none
  • strengthen DMARC record to p=quarantine
  • review DMARC reporting under p=quarantine
Edited by Andrew Escobar (Andres)
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