Why does SPF permerror include domain has no SPF record break email delivery?

You’re sending emails to customers. They’re not getting them. You check your logs. The error says: permerror include domain has no SPF record. What now?

This isn’t a typo or a fluke. It’s a fundamental flaw in your email authentication setup. SPF doesn’t just check your own record — it checks every domain you reference. When one of those domains has no SPF record at all, SPF validation fails completely. There's no soft fail. No warning. Just a hard rejection.

Major providers like Gmail and Outlook don’t tolerate this kind of misconfiguration. They treat it as a red flag. Messages get flagged as spam or outright blocked. Your sender reputation takes a hit — and delivery drops off a cliff.

Key takeaways

  • An SPF permerror include domain has no SPF record occurs when a referenced domain in your SPF record lacks any SPF record, breaking validation entirely.
  • Even a single missing SPF record in an include directive can cause a hard failure, leading to email rejection by major providers like Gmail and Outlook.
  • SPF fails completely on permerror — no soft-fail, no grace period. Fixing the missing record is required to restore delivery.

What exactly does 'include' mean in an SPF record?

The include tag in an SPF record lets you use another domain’s email authentication policy as part of your own. If you send emails through a third-party service like SendGrid or Mailgun, you can write include:_spf.sendgrid.net to tell receiving servers: "Check SendGrid’s SPF policy alongside mine." This only works if the included domain actually has a published SPF record. Without it, your SPF check fails with a permerror — which is why "include domain has no SPF record" is a common problem.

How include works in practice

Let’s say you manage example.com and use SendGrid for transactional emails. You’d add include:_spf.sendgrid.net to your SPF record. When an email arrives from your domain, the receiving server checks both your SPF policy and SendGrid’s. If SendGrid’s record is missing, the check fails with a permerror — not just for that email, but for your reputation long-term.

It’s not just SendGrid. Services like Amazon SES, Mailgun, and others publish SPF records under their own domains. You can include them — but only if they’re there. The key is checking that the included domain’s DNS resolves an SPF record before you add it to your own. A missing or empty SPF record causes the inclusion to fail, even if everything else in your SPF looks correct.

Check this in real time using tools that validate DNS responses. For example, a lookup at MxToolbox or RFC 7208 shows how SPF parsing works in the wild. The RFC explains that include is meant to be safe, but only when the referenced domain actually authenticates its sending domains — which means you can’t rely on an included domain just because it exists in your DNS settings.

Why this fails with “SPF permerror include domain has no SPF record”

This error means you listed a domain in include, but that domain has no SPF record published in DNS. Maybe the domain is misconfigured, expired, or never set up. The receiving server sees the include and tries to fetch the policy, finds nothing, and returns a permanent failure — even if your own SPF record is valid.

Fixing it requires two steps: first, confirm that the included domain has a valid SPF record using a DNS lookup tool. Second, verify that your DNS includes the correct syntax. Use your email verification platform to test SPF behavior across real-world recipients. MailTester's inbox placement tool helps you see real inboxes, and its bulk verification lets you test large lists against SPF issues before sending.

Don’t assume every service you use automatically has a public SPF record. Not all do. When in doubt, check the service’s documentation or use inbox placement testing to see if your emails are landing in Gmail, Outlook, or other inboxes — where SPF failures often show up as delivery delays or rejections.

What happens when the include domain has no SPF record?

If the domain listed in an SPF include tag has no SPF record, the receiving mail server sees a reference to a policy that doesn’t exist, triggering a permerror during SPF evaluation. This stops the check immediately and typically results in the email failing authentication, often leading to rejection or spam filtering.

How the failure occurs

When your SPF record contains an include directive — say, include:example.com — the receiving server performs a DNS lookup to fetch the SPF policy from that domain. If example.com has no SPF record, the DNS response returns no policy. That’s not a soft failure. It’s a hard break in the chain.

According to RFC 7208, which defines the SPF specification, a missing SPF record on the included domain is treated as a permanent error. The server cannot resolve the policy, and no further evaluation proceeds. This means SPF validation halts, and the message fails verification.

Why this breaks deliverability

Even if your own SPF record is well-formed, relying on a domain with no SPF record creates a vulnerability. The receiving server doesn’t know if the included domain is legitimate or spoofed. As a result, it treats the entire chain as untrusted.

This is why many high-volume senders use tools like MailTester’s bulk verification to scan for misconfigured SPF records during list hygiene. It catches these errors before they hit your inbox placement or trigger hard bounces.

Even if your email server isn’t rejecting messages, a permerror on SPF can harm sender reputation. Over time, consistent SPF failures correlate with higher spam folder rates.

It's worth noting that some email providers, like Google and Microsoft, use SPF as part of broader authentication checks. A failed SPF check — especially one tied to missing records — can reduce your chances of landing in the primary inbox.

Let’s be clear: you don’t need to own or control every domain in your SPF chain. But you do need to understand which ones are used and whether they have valid SPF policies. When in doubt, use MailTester’s real-time API to validate SPF configurations across domains at scale.

For teams using automated email sending (like in SendGrid or Klaviyo), MailTester integrates directly with your workflow to surface SPF errors before you send.

If you’re not checking SPF records regularly, you’re likely already leaking deliverability risk — not just from missing SPF, but from other hidden misconfigurations. Use tools that don’t just tell you the error, but show you how to fix it.

How to detect if an include domain has no SPF record

If your SPF record uses an include tag pointing to another domain, that domain must have a valid SPF record of its own. Use a DNS lookup tool like MxToolbox or run dig txt _spf.example.com to check. If the result is empty or malformed, the included domain lacks a functional SPF record — this triggers a permerror and may break your email authentication.

Step-by-step verification process

  1. Identify the domain in your SPF include tag — for example, include:_spf.google.com or include:support.example.net. This is the domain you need to verify.
  2. Run a DNS TXT record lookup using dig txt _spf.your-included-domain.com in your terminal or a public tool like MxToolbox. This query checks the DNS for the SPF record on that domain.
  3. Analyze the response — if the tool returns no results, an empty string, or a malformed SPF syntax (like two spf1 tags), the domain has no valid SPF record. This causes a permerror during SPF validation.
  4. Check for common issues — some domains use SPF records only for inbound mail, not outbound. Others may have an SPF record that’s too long or references invalid mechanisms. These conditions also count as “no valid SPF” from a senders’ perspective.
  5. Verify with a real email provider — if you're not sure, send a test message from your email service and check the full header. Look for spf=permerror in the authentication results, which indicates a critical SPF failure due to an invalid include.

Why this matters for deliverability

SPF permerrors from missing SPF records in included domains are a red flag to receiving mail servers. Even if your own domain is correctly configured, a single missing SPF record in an include domain can invalidate your entire authentication. This often leads to messages being rejected or marked as spam.

SPF mechanisms like include depend entirely on the included domain’s records being present and valid. As defined in RFC 7208, SPF evaluation halts immediately on a permerror. This means your email may fail verification before even reaching DKIM or DMARC.

Use MailTester’s bulk verification to audit your entire sending list and catch SPF-related issues early. Our real-time API checks email addresses and their domains for SPF, DMARC, and other deliverability risks — including malformed or missing records in include tags.

Real-world impact: SPF permerror affects deliverability

If your domain includes another domain in its SPF record that has no SPF record, you’ll generate a permerror. This breaks SPF validation, which mail providers treat as a baseline trust signal. Even one such error can reduce inbox placement by 20–30% or more, especially for high-volume senders, because it signals misconfiguration or lack of control over your email infrastructure.

SPF permerrors show up in reputation monitoring tools

Let’s say you’re using a third-party service for transactional emails and include their domain in your SPF. If they haven’t set up SPF, your own record becomes invalid. Tools like MxToolbox or SenderScore (used by major providers) flag this as a failure. It shows up as a red flag in your sender reputation dashboard—no matter how clean your sending practices are. You didn’t send a bad message, but the infrastructure around it failed.

Mail providers rely on SPF validation

Google and Microsoft use SPF not just as a spam filter but as a way to assess sender legitimacy. If your SPF check fails with a permerror—especially due to missing records in includes—it lowers your sender score. This isn’t just a technicality; it affects how your messages are prioritized in inboxes. A single failure can push your email from the primary inbox to the spam folder, especially on Gmail and Outlook.

And it gets worse. Each broken include adds another failure point. For example, if you include three domains, and one has no SPF, your SPF fails. If all three have issues, or if one is misconfigured, the whole chain breaks. The risk is cumulative. A sender with ten includes and one missing SPF record is far more likely to be blocked than a sender with no includes at all.

You can verify SPF integrity across your sending stack using real email validation tools. MailTester’s bulk verification and inbox placement tester help catch SPF issues before they hurt deliverability. The verification API integrates directly into your workflows, so you can validate domains programmatically. These tools don’t just detect syntax errors—they surface real-world problems like missing SPF records in includes. You don’t need to guess what’s breaking your delivery. You can see it.

If you're using a third-party service to send email, ask them: “Do you have an SPF record?” If they can’t answer, you’re at risk. Even if their service is legitimate, their lack of SPF can still hurt you. It’s not about their content—it’s about trust signals. You can’t trust a sender’s infrastructure if one of their included domains has no SPF record. This is how a small misstep creates big delivery problems.

Common sources of include domain failures

You’re seeing SPF permerror include domain has no SPF record when the domain referenced in your SPF include tag doesn’t have a valid SPF record published. This often happens when you trust a third-party provider without checking their SPF setup, use outdated references after infrastructure changes, mistype the domain name, or include internal domains that aren’t publicly accessible. Let’s break down the most common triggers.

Third-party providers with unverified SPF

  • Just because a service like Mailchimp or SendGrid says they’re SPF-compliant doesn’t mean their domain is correctly published in DNS. Check RFC 7208—SPF includes must resolve to a valid DNS record to pass.
  • Don’t assume your integrations are safe. When you include include:_spf.sendgrid.net, verify that record actually exists. A missing or malformed record causes a permanent failure.

Outdated or internal DNS references

  • Domains that once hosted email but now use a different provider still may be listed in old SPF records. If you're including a domain that’s no longer active or has changed providers, you’ll hit a permerror.
  • Internal domains like include:internal.corp or include:mail.internal.example are invalid—they can’t be resolved by external mail servers. SPF requires publicly reachable records.
  • A typo in the domain name—like include:_spf.sendgrid.com instead of include:_spf.sendgrid.net—is a common but easily missed mistake. Double-check every domain listed in your SPF.

Each of these failures breaks SPF validation permanently, which means you’re more likely to be blocked outright by receiving servers. You don’t need to guess what’s wrong. Use a tool like MailTester’s bulk verification to test your SPF records alongside actual email addresses and catch problems before they damage your sender reputation.

How to fix SPF permerror include domain has no SPF record

If your SPF record contains an include directive pointing to a domain with no SPF record, you’ll get a permerror. To fix it, audit every include entry, confirm each referenced domain has a valid SPF record published in DNS, and either remove the include or contact the provider. If the service still needs to be included, verify they allow include statements — many don’t support SPF at all.

Step-by-step fix

  1. Audit all include entries in your SPF record. Use tools like MXToolbox or RFC 7208 to list every domain referenced via include. This is the only way to catch hidden dependencies.
  2. Verify each included domain has a published SPF record. For each domain in your include list, check its DNS records using a tool like dig txt domain.com or DNSChecker. If there's no SPF record, you’ve found the root of the permerror.
  3. Remove or replace includes pointing to domains without SPF. If the included domain has no SPF record, remove the include entry from your record. Don’t assume it’s safe — no SPF means no validation, which can break filtering.
  4. Contact the service provider if the include is still required. Some third-party services (like email platforms or marketing tools) may allow include statements. If they don’t, request support or ask if they offer a valid SPF alignment method.
  5. Avoid including domains that don’t support SPF. Even if the service seems relevant, including domains like mailchimp.com or sendgrid.net without proper SPF handling can cause permerrors. Let the provider confirm compliance.

Prevention and verification

Once fixed, validate your SPF record with a service like MailTester’s bulk verification to catch future issues across your list. You can also use the real-time API to check SPF health during onboarding.

When setting up new includes, always confirm the target domain has an active SPF record. This is an industry-standard practice: RFC 7208 requires that include domains be validly published SPF sources.

And remember: you can’t rely on reputation alone. A missing SPF record on an included domain will break authentication — and that’s how mail gets blocked.

Why your SPF record must be valid and complete

If your SPF record contains an include directive pointing to a domain with no SPF record or a malformed one, the entire SPF validation fails — even if only one include fails. SPF is strict: a single invalid include triggers a permerror, breaking authentication for all your outbound emails, regardless of the rest of the record’s validity. This is why you must verify every domain listed in your include directives.

SPF validation fails on the first break

SPF doesn’t run a partial check and let the rest pass. It processes the record sequentially, and if any include fails — whether due to a missing record, a syntax error, or a DNS lookup timeout — the validation stops immediately. The result isn’t a warning. It’s a hard failure, which means your email will be rejected by receivers that check SPF, or marked as suspicious.

Lookups are finite — every include counts

SPF limits DNS lookups to 10 per validation. Every include directive, even indirect ones, counts toward that total. If you have seven domains listed in includes, and two of them return no SPF record, you’ve already used 9 lookups just checking for SPF presence. This leaves just one lookup for your own domain — and if anything breaks in that chain, you get a permerror.

It doesn’t take many includes to hit that limit. Overlapping third-party services, nested includes (like include:thirdparty.com which itself includes another domain), or poorly maintained vendor records can quickly eat up your allowance. Once you exceed 10, the validation fails — the same way it does when an include domain has no record.

And here’s the catch: a single malformed include — say, a typo like include:sendgrid.coom — can cause a full fail, even if the rest of your SPF is flawless. That’s because SPF evaluates the syntax and DNS results at parse time. Mistakes in includes don’t just warn you — they silence the whole record.

Use tools that validate your SPF record in real time, including all include chains. MailTester’s bulk verification checks each domain in your SPF includes, flagging those with no record or malformed syntax. This prevents the hidden failure modes that lead to permerrors and deliverability blackouts.

SPF is not a backup system. It’s a gatekeeper. If the record is incomplete or inconsistent, even one broken link stops the entire process. For that reason, it’s safer to maintain a minimal, self-contained SPF record with clear authorization, or use DKIM and DMARC — which rely on different mechanisms — as secondary validators.

The best resource for understanding SPF’s technical constraints is RFC 7208, which defines the 10-lookup limit and the strict evaluation rules — including how includes are resolved and when validation ends.

SPF, DKIM, and DMARC: the triad of email authentication

You need all three—SPF, DKIM, and DMARC—properly configured to authenticate your emails and protect your sender reputation. SPF only checks if the sending server’s IP is authorized; DKIM verifies that the message content hasn’t been altered; DMARC enforces policies on what to do when either SPF or DKIM fails. Without all three, your emails risk being flagged, quarantined, or blocked by receivers, even if your content is clean.

SPF: checking the sender’s IP, not the content

SPF (Sender Policy Framework) tells receiving servers which IPs are allowed to send mail on your domain’s behalf. If an email comes from an IP not listed in your SPF record, it fails. But here’s the catch: SPF only checks the sending server. It doesn’t validate the email’s content or headers. That’s why SPF alone isn’t enough—malicious senders can spoof your domain if you rely solely on it.

A common error like “SPF permerror include domain has no SPF record” means a domain referenced in your SPF record (via the include mechanism) doesn’t have its own SPF setup. This breaks the chain and results in a permanent failure. Use tools like MxToolbox or RFC 7208 to test your configuration, and always verify that every included domain has a valid SPF record.

DKIM and DMARC: securing the message and enforcing policy

DKIM (DomainKeys Identified Mail) adds a digital signature to your email headers and content. When a receiver checks that signature, it verifies the message wasn’t altered in transit. Without DKIM, even a perfectly valid SPF pass can fail if the email has been modified—say, by a malware-laden relay or misconfigured mailing tool.

DMARC (Domain-based Message Authentication, Reporting & Conformance) ties SPF and DKIM together. It tells receivers what to do when authentication fails: reject, quarantine, or just report. You can’t rely on DMARC without correct SPF and DKIM. It’s the enforcement layer, and without it, receivers ignore failures and may treat your emails as suspicious.

Let’s say you send a campaign and the sender IP is authorized (SPF pass), the content matches the DKIM signature, and DMARC policy says “reject.” That’s strong. But if any piece is broken, your email lands in spam—or doesn’t get delivered at all. Use MailTester’s bulk verification to catch these issues before you send. It checks SPF, DKIM, and DMARC in real time across major inboxes.

Use MailTester to prevent SPF failures before they happen

You can avoid SPF permerror include domain has no SPF record issues by checking email addresses in real time. MailTester’s API scans for missing or broken SPF records during validation, flagging domains with broken include chains before you send. This stops bounces and deliverability damage before your campaign starts.

SPF checks happen at verification time

Let’s say your list includes an address like [email protected]. If company.example.com has no SPF record or a misconfigured include, MailTester detects it immediately. The system doesn’t rely on post-send feedback — it acts during validation, using live DNS lookup and protocol-aware checks.

Every API call checks for common SPF pitfalls: missing records, malformed syntax, or include chains pointing to domains without valid SPF. This includes checking subdomains and third-party mail services that depend on SPF alignment.

Clear verdicts, no guesswork

After testing, MailTester returns one of four verdicts: valid, invalid, catch-all, or risky. A 'risky' label often means the domain has no SPF record — a red flag for senders and a common cause of permerrors.

Using this data, you can prune bad addresses early. For example, if an address shows as 'catch-all', it means the domain accepts all emails — likely not a real person, which increases spam risk and hurts sender reputation.

With 98.9% accuracy, MailTester identifies these issues reliably. Accuracy comes from real-world DNS validation, not heuristics or outdated rules. The system respects current email standards, including those defined in RFC 7208 for SPF (https://www.rfc-editor.org/rfc/rfc7208).

Integrate this directly into your workflow. Through the real-time verification API, you can catch SPF issues at scale. Combine it with bulk verification for larger lists, and use inbox placement testing to confirm delivery in real mail clients.

Conclusion: Prevent SPF Permerror by validating include domains

A missing SPF record in an 'include' domain triggers a permanent error that blocks email delivery. This isn't a temporary delay—it's a fundamental failure in your email infrastructure.

SPF permerrors from include domains cannot be fixed by retrying messages. The only solution is proactive validation: check your own SPF record and the SPF records of every included domain.

Use real-time verification tools like MailTester to scan your sender list, catch malformed or invalid domains, and clean out records that violate SPF policies before sending.

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Frequently asked questions

What does SPF permerror include domain has no SPF record mean?

It means your SPF record references a domain via 'include', but that domain lacks any SPF record in DNS, causing a permanent failure in authentication.

Can I still send email if an include domain has no SPF record?

No — SPF permerror blocks the message entirely. The receiving server treats the authentication as failed and may reject or flag the email as spam.

How do I check if an include domain has an SPF record?

Use a DNS tool like MxToolbox or run `dig txt _spf.domain.com` to check for a valid TXT record containing an SPF policy.

Why is SPF permerror worse than a soft failure?

A permerror is a permanent, irreversible failure. Soft failures may be tolerated temporarily, but permerrors block delivery immediately.

Do all third-party services need SPF records to be included?

Only if they are explicitly referenced in your SPF 'include' tag. Not all outbound providers require inclusion — check their documentation.

Can I use MailTester to check my SPF record?

MailTester doesn’t directly validate SPF records, but it checks the domains in your list for issues including missing SPF, catch-all, or role accounts.

What’s the safest way to handle third-party senders in SPF?

Only include domains that have publicly published, valid SPF records. Otherwise, remove the include or use a different authentication method.

How many DNS lookups are allowed in SPF?

SPF allows a maximum of 10 DNS lookups per evaluation. Each 'include', 'a', 'mx', 'ptr', and 'exists' counts toward the limit.

Does removing an include fix the permerror?

Yes — if the include was causing the error due to a missing record, removing it resolves the permerror and restores SPF validation.

Can a valid SPF record fail due to include misconfiguration?

Yes — even one missing or invalid 'include' can cause a permerror and break the entire SPF validation chain.

What is the difference between a missing SPF record and a malformed one?

A missing record returns no result. A malformed record may return syntax errors, multiple records, or unexpected formats, both breaking SPF.

Is SPF required for email deliverability?

It’s not required by law, but it’s an industry-standard practice. Most major email providers require SPF or a similar authentication method to trust your messages.