What Does SPF Record Missing Mean?

Updated March 21, 2026 · 8 min read

What is an SPF Record?

SPF stands for Sender Policy Framework. It is a type of DNS (Domain Name System) record that tells email servers around the world which IP addresses and mail servers are authorized to send email on behalf of your domain.

Think of it like a guest list for a private event. When someone tries to send an email from your domain — say, billing@yourcompany.com — the receiving mail server checks your SPF record to see if the sending server is on the list. If it is, the message passes the check. If it is not, the server knows something might be wrong.

An SPF record is published as a TXT record in your domain's DNS settings. It looks something like this:

v=spf1 include:_spf.google.com include:servers.mcsv.net ~all

This example says: "Emails from my domain can be sent by Google Workspace servers and Mailchimp servers. Treat anything else with suspicion." The v=spf1 part identifies it as an SPF record, the include: statements authorize specific senders, and ~all tells receivers what to do with everything else (soft fail, in this case).

What Does "SPF Record Missing" Actually Mean?

When a domain security scan — like the one from GuardHound's free scan — shows "SPF record missing," it means there is no SPF TXT record published in your domain's DNS settings. Zero. None.

Without an SPF record, there are no rules telling the rest of the internet who is allowed to send email as your domain. Any mail server anywhere in the world can send an email that claims to be from you@yourdomain.com, and receiving servers have no SPF-based mechanism to detect the forgery.

This is not a hypothetical risk. Email spoofing is one of the most common tactics used in phishing attacks, business email compromise (BEC), and spam campaigns. Attackers actively scan for domains without SPF records because those domains are the easiest to impersonate.

Why a Missing SPF Record is Dangerous

A missing SPF record exposes your domain and your business to several serious risks:

• Email spoofing: Anyone can forge the "From" address on an email to make it look like it came from your domain. This is trivially easy to do when there is no SPF record to contradict the claim.
• Phishing attacks using your brand: Attackers can send convincing phishing emails to your customers, vendors, or employees that appear to come from your real domain. These emails can trick recipients into clicking malicious links, entering passwords, or wiring money.
• Your legitimate emails land in spam: Major email providers like Gmail, Microsoft 365, and Yahoo increasingly penalize domains without SPF records. Even your real, legitimate emails may be flagged as suspicious or sent directly to spam folders.
• Deliverability problems: Beyond spam filtering, some corporate email gateways will reject messages outright from domains that lack basic authentication records. This can silently break communication with clients and partners.
• Brand reputation damage: If someone sends spam or phishing emails from your domain, your brand takes the hit. Recipients blame the domain they see in the "From" field, not the anonymous attacker behind it.
• Domain blacklisting: If your domain is used in enough spam campaigns, it can be added to email blacklists like Spamhaus or Barracuda. Once blacklisted, even your real emails will be blocked by a wide range of servers — and getting removed from a blacklist is a slow, painful process.

How to Check if You Have an SPF Record

The fastest way to check is to use our free SPF Checker tool. Enter your domain name, and it will immediately show you whether an SPF record exists and whether it is configured correctly.

If you prefer the command line, you can run this in a terminal:

nslookup -type=txt yourdomain.com

Look through the results for a TXT record that starts with v=spf1. If you do not see one, your SPF record is missing. On macOS or Linux, you can also use:

dig txt yourdomain.com +short

If neither command returns a record starting with v=spf1, you need to create one. The next section walks you through exactly how to do that.

How to Fix a Missing SPF Record — Step by Step

1. Identify all services that send email for your domain

   Before writing your SPF record, you need a complete list of every server and service that sends email using your domain name. Common ones include:

   • Google Workspace (Gmail for business)
   • Microsoft 365 (Outlook for business)
   • Mailchimp, Sendgrid, or Mailgun (marketing and transactional email)
   • Your web hosting provider (if your website sends emails, like contact forms)
   • CRM platforms like HubSpot or Salesforce that send email on your behalf
   • Helpdesk tools like Zendesk or Freshdesk

   Check with each department in your organization. Marketing may use a different email service than support, and accounting may use yet another. Missing a sender here means their emails will fail SPF checks later.

2. Build your SPF record

   Every SPF record starts with v=spf1 and ends with an all mechanism. In between, you add each authorized sender using include: statements. Here are common examples:

   # Google Workspace only
   v=spf1 include:_spf.google.com ~all
   
   # Google Workspace + Mailchimp
   v=spf1 include:_spf.google.com include:servers.mcsv.net ~all
   
   # Microsoft 365 + SendGrid
   v=spf1 include:spf.protection.outlook.com include:sendgrid.net ~all

   Each email service provider will document the exact include: value you need. Check their help docs or support pages for "SPF record setup."

3. Add the TXT record in your DNS provider

   Log into the control panel where your domain's DNS is managed. This is typically your domain registrar (GoDaddy, Namecheap, Google Domains) or your DNS host (Cloudflare, Route 53).

   General steps (most providers):

   • Navigate to DNS management or DNS zone settings for your domain
   • Add a new record with type TXT
   • Set the host/name field to @ (this represents your root domain)
   • Paste your SPF record as the value, for example: v=spf1 include:_spf.google.com ~all
   • Set TTL to 3600 (1 hour) or leave it at the default
   • Save the record

   Cloudflare: Go to your domain → DNS → Records → Add Record. Set type to TXT, name to @, and paste your SPF value in the Content field.

   GoDaddy: Go to My Products → DNS → Add Record. Choose TXT, set host to @, and paste the value in the TXT Value field.

   Namecheap: Go to Domain List → Manage → Advanced DNS → Add New Record. Choose TXT, set host to @, and enter the value.

4. Verify with GuardHound SPF Checker

   After saving, wait a few minutes for DNS propagation (usually 5–30 minutes, though it can take up to 48 hours in rare cases). Then use the GuardHound SPF Checker to confirm your new record is visible and correctly formatted. The tool will flag any syntax errors or issues.

5. Avoid common mistakes

   Several pitfalls trip up even experienced admins:

   • Multiple SPF records: You must have exactly one SPF TXT record per domain. If you accidentally create two (for example, one for Google and another for Mailchimp), both will break. Combine all senders into a single record.
   • Too many DNS lookups: SPF allows a maximum of 10 DNS lookups. Each include: counts as one, and the included records may trigger additional lookups. If you exceed 10, your SPF record will return a permanent error. Use an SPF flattening service or reduce includes if needed.
   • Using +all: Never use +all at the end of your SPF record. This literally tells the world "accept email from anyone claiming to be my domain" — it defeats the entire purpose of SPF.
   • Forgetting a sender: If you add SPF but forget to include a legitimate service (like your CRM), emails sent by that service will start failing SPF checks. Audit all senders first.

SPF and DMARC: Working Together

SPF does not work alone. It is one of three protocols — SPF, DKIM, and DMARC — that together form the foundation of modern email authentication.

SPF verifies that the sending server is authorized. DKIM (DomainKeys Identified Mail) adds a cryptographic signature to the email, proving it was not tampered with in transit. DMARC (Domain-based Message Authentication, Reporting, and Conformance) ties SPF and DKIM together and tells receiving servers what to do when an email fails both checks — accept, quarantine, or reject it.

For DMARC to work, your emails need to pass either SPF or DKIM, and the domain used must align with the "From" address. Without an SPF record, you are relying entirely on DKIM for DMARC alignment. That is a single point of failure. Best practice is to implement all three: SPF to authorize senders, DKIM to sign messages, and DMARC to enforce a policy and receive reports.

For a deeper dive into DMARC, read our guide: What is DMARC? A Complete Guide.

How GuardHound Helps

Fixing a missing SPF record is a great first step, but domain security is not a one-time task. DNS records can be accidentally deleted, services change their SPF requirements, and new threats emerge constantly. GuardHound provides the ongoing monitoring you need to stay protected:

• Continuous DNS monitoring: GuardHound checks your SPF, DMARC, DKIM, and other DNS records on an ongoing basis and alerts you the moment something changes or goes missing.
• Instant alerts: Receive notifications via email if your SPF record is deleted, modified, or misconfigured — before it affects your deliverability or opens you up to spoofing.
• Free SPF Checker: Our SPF Checker tool lets you validate your record at any time, with plain-English explanations of any issues found.
• Full domain health check: The Domain Health Check gives you a complete picture of your domain's security posture — SPF, DMARC, DKIM, SSL, DNS, and more — in a single scan.
• Lookalike domain detection: GuardHound also watches for lookalike domains that attackers may register to impersonate your brand.