SPF, DKIM, and DMARC
SPF, DKIM, and DMARC are the identity layer for production email.
| Record | Purpose |
|---|---|
| SPF | Authorizes Mailtarget to send mail for your domain. |
| DKIM | Signs each message so receiving servers can verify that the message was not modified. |
| DMARC | Tells receivers how to treat mail that fails alignment checks. |
Mailtarget provides the exact records to publish when you add a sending domain. Copy them exactly, publish them at your DNS provider, then verify the domain in Mailtarget.
Common failures
- Publishing two SPF TXT records instead of merging into one.
- Proxied CNAME records at Cloudflare.
- DKIM labels changed by the DNS provider.
- DMARC policy set to
rejectbefore all legitimate senders are aligned.