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Help / Sending email

Sending domain: SPF, DKIM and DMARC

SPF, DKIM and DMARC are three DNS records that tell inboxes your email really comes from you. Fullturn will not send cold email from a domain until all three are valid.

Add the domain

  1. Go to Sending, then Domains, and choose Add sending domain.
  2. Fullturn checks SPF, DMARC, the common DKIM selectors, and the Spamhaus domain blocklist.
  3. Where a record is missing, the page shows the record to add. Add it where your domain's DNS is managed (your registrar or DNS host), then check again.

What each record does

  • SPF lists the servers allowed to send for your domain.
  • DKIM signs each email so it cannot be changed on the way. Your mail provider gives you the DKIM record.
  • DMARC tells inboxes what to do with mail that fails the other two. Its record starts with v=DMARC1.

Reading the status

  • Found means Fullturn saw a valid record. Not proven means it did not, or the check is out of date. DNS changes can take time to spread, so check again later before changing anything.
  • Active sending domains are checked weekly. A domain that was valid and now is not shows as an issue.
  • The setup step is done when every active sending domain has fresh, valid SPF, DKIM and DMARC.
  • A domain on a blocklist stops cold sending from its mailboxes until it is cleared.