Setting up email authentication for AWeber

AWeber authenticates with DKIM and DMARC only, no SPF — so until you add its three DKIM CNAMEs your broadcasts have nothing your domain's DMARC policy can align to.

Check your domain first — 10 seconds, free, no signup.
See your DMARC policy, SPF lookup count and every issue explained in plain English.
Run the free check →

The one-paragraph version

AWeber doesn't use SPF at all — it authenticates with DKIM and DMARC only. Add three rotating CNAMEs — aweber_key_a._domainkey, aweber_key_b._domainkey and aweber_key_c._domainkey — each pointing to the matching host under send.aweber.com, so AWeber can rotate keys without you touching DNS again. Because there's no SPF, your DMARC pass rides entirely on that DKIM signature. Source: docs.aweber.com · verified 2026-07-15

The full checklist

Step 1. Complete domain authentication inside the service (see above) and paste the DNS records it generates.
Step 2. Make sure your SPF record includes this service — and count your lookups: the limit is 10 and every service adds some.
Step 3. Publish DMARC with p=none and a rua address, watch reports for a week, confirm this sender shows 100% pass.
Step 4. Only then tighten the policy — quarantine, then reject.

Frequently asked

Will this change break my current sending?

No. Adding SPF includes and DKIM records only adds authentication — it never blocks existing mail. The only risky step is tightening your DMARC policy, and that comes later, after reports confirm everything passes.

How do I know it worked?

Send yourself a test email and inspect the headers for spf=pass, dkim=pass and dmarc=pass — or just watch your DMARCKeeper dashboard: the sender's pass rate should hit 100% within a day or two.

Do I still need DMARC if SPF and DKIM are set up?

Yes. SPF and DKIM authenticate mail; DMARC is what tells receivers to BLOCK mail that fails, and it's the piece Gmail, Yahoo and Outlook now check for explicitly.

Don't want to babysit DNS records?
DMARCKeeper monitors your reports, names every sender, and walks you to full p=reject protection.
Start free monitoring →