Make Constant Contact DMARC-compliant
How to authenticate Constant Contact as a sender on your domain - so its mail passes SPF, DKIM and DMARC, and you can safely reach enforcement.
Three steps to authenticate Constant Contact
Constant Contact needs to pass SPF and DKIM, and align with your domain so DMARC passes. Here’s how – confirm the exact values against Constant Contact’s current documentation as you go.
How Constant Contact authenticates
An SPF include isn't needed - Constant Contact always manages the envelope-from domain, so an SPF record on your domain doesn't help alignment. Use its self-authentication instead.
So there’s no SPF include to paste in for Constant Contact – DKIM (next step) is what carries DMARC alignment. Hosted SPF still helps keep your overall record under the 10-lookup limit.
No SPF include to add
Constant Contact authenticates through the CNAME records you publish during its domain-setup flow – follow Step 2.
Turn on DKIM signing
DKIM cryptographically signs each message so receivers can prove it really came from you and wasn’t tampered with. Self-authenticate in your account: publish the DKIM CNAME records (recommended), or a DKIM TXT record if several Constant Contact accounts share one domain.
DKIM is what keeps you authenticated even when a message is forwarded – so it’s worth getting right. More on how DKIM works →
- Enable DKIM inside Constant Contact
- Publish the DNS records it gives you
- Wait for it to verify, then send a test
Confirm alignment, then enforce
With SPF and DKIM set up, check that Constant Contact aligns – that the authenticated domain matches your visible From address. Once every legitimate sender aligns, you can move DMARC to p=reject safely.
DMARCER’s enforcement journey shows you exactly when it’s safe to advance – no guesswork.
Good to know
Adding a Constant Contact SPF include just wastes a DNS lookup - the DKIM path is what makes DMARC pass.
Check you got it right
Look up your records instantly, or run a full free check to confirm Constant Contact passes SPF, DKIM and DMARC – and get your score out of 100.
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