SPF Redirect Explained
The SPF redirect mechanism tells receivers to ignore the current domain's local SPF logic and instead evaluate another domain's SPF record as the authoritative policy. Redirect is useful in some controlled environments, but it is often misunderstood. It is not the same as include. Include adds another sender policy into your evaluation. Redirect replaces the local policy path entirely.
One-Minute Fix
Use redirect only when another domain should fully define SPF for the current domain. If you still need local authorization rules, use include instead.
v=spf1 redirect=_spf.example.comA redirect means the target domain becomes the SPF policy for the current domain. It does not combine with local mechanisms the way include does.
Re-checkWrong vs correct setup
Wrong use of redirect
v=spf1 ip4:198.51.100.10 redirect=_spf.example.comThis is usually conceptually wrong if you expect both the local IP and the redirected domain to be evaluated together. Redirect is not meant to work like include.
Correct redirect pattern
v=spf1 redirect=_spf.example.comUse redirect when another domain should fully own SPF logic for this domain.
Why this happens
Teams often inherit SPF setups they did not design, and redirect is one of the easiest mechanisms to misunderstand. It is sometimes used when include was actually intended, especially during migrations or shared-domain setups.
Why this is a problem
- Redirect can accidentally remove expected local SPF logic.
- Troubleshooting becomes harder because authorization lives on another domain.
- A broken redirected policy can affect several dependent domains at once.
- Teams often mistake redirect for include and publish the wrong SPF behavior.
How this affects deliverability
Redirect itself is not bad, but it centralizes SPF dependency. If the target policy is wrong, stale, or overloaded, all dependent domains can inherit the problem immediately.
Common causes
- Redirect was used instead of include.
- A legacy shared-policy setup was copied without understanding it.
- Subdomains were configured to inherit SPF from a central domain.
- The redirected target changed and unexpectedly broke several domains.
What we checked
We reviewed whether the SPF record uses redirect appropriately and whether the domain should really inherit another domain's full SPF policy instead of using include.
Live DNS lookup. No login. No saved domains. No tracking.
FAQ
What is the difference between include and redirect?
Include adds another domain's SPF logic into your policy. Redirect replaces your local SPF policy with another domain's policy.
Can I keep local rules and use redirect too?
Usually that is not what you want. If you need local rules plus another provider, include is generally the better mechanism.
When is SPF redirect useful?
It is useful when several domains intentionally inherit one central SPF policy and no local sender rules need to remain active.
Next steps
- Decide whether you want inheritance or simple sender authorization.
- Use include if the current domain still needs local SPF logic.
- Verify the target redirected domain has a valid SPF record.
- Document every domain that depends on the redirected policy.
- Re-test SPF after any redirect target change.
- Review the full troubleshooting guidance in the SPF Hub.
- Check signing and selector issues in the DKIM Hub.
- Review alignment and policy issues in the DMARC Hub.