What to Do If Your DMARC Record Fails Verification

Why Is My DMARC Record Failing? A Step-by-Step Guide to Fix It

You set up your DMARC record, but it’s failing verification. Now what? A failed DMARC record can expose your domain to phishing, spoofing, and email delivery issues. Instead of panicking, let’s troubleshoot the problem step by step.

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🔍 Step 1: Confirm That Your DMARC Record Exists

Before diving into fixes, check if your DMARC record is properly published.

✅ How to Check

Use a DMARC lookup tool to verify your record: ​

Example command (using nslookup in Windows)

shCopyEditnslookup -type=TXT _dmarc.yourdomain.com

If the response does not include a valid DMARC record, then your record is missing or misconfigured.

🔧 How to Fix

1. Publish a new DMARC record in your DNS:

   plaintextCopyEdit_dmarc.yourdomain.com TXT "v=DMARC1; p=none; rua=mailto:reports@yourdomain.com"
   

2. Ensure there’s only one DMARC record (duplicate records cause failures).

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🛠 Step 2: Fix Syntax Errors in Your DMARC Record

DMARC records follow a strict format. Even a small mistake—like a missing semicolon—can break it.

✅ How to Check

Copy your record and paste it into a DMARC syntax validator tool.

🔧 Common Issues & Fixes

Issue	Example	Fix
Missing "v=DMARC1"	p=reject; rua=mailto:reports@yourdomain.com	Add v=DMARC1; at the beginning.
Improper Spacing	v=DMARC1; p = reject;	Remove extra spaces: p=reject;
Invalid Policy	p=disabled	Use none, quarantine, or reject only.

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🌎 Step 3: Verify Your DNS Propagation

Even if your DMARC record is correct, it may not be live yet due to DNS propagation delays.

✅ How to Check

• Use a DNS propagation checker.

• Try running this command:

  shCopyEditdig txt _dmarc.yourdomain.com +short
  

• If your record isn’t showing, your DNS may still be updating.

🔧 How to Fix

• Wait 24-48 hours for full DNS propagation.
• If it’s still not live, check for DNS configuration errors with your provider.

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📧 Step 4: Ensure SPF and DKIM Are Set Up Correctly

DMARC relies on SPF and DKIM. If they’re misconfigured, DMARC verification can fail.

✅ How to Check

Run SPF and DKIM lookups:

shCopyEditnslookup -type=TXT yourdomain.com

Look for records like:

• SPF: v=spf1 include:_spf.google.com ~all
• DKIM: v=DKIM1; k=rsa; p=MIIBIjAN...

🔧 How to Fix

• Ensure your SPF record includes all valid sending sources (Google, Microsoft, Mailchimp, etc.).
• Generate a DKIM record from your email provider and publish it in DNS.

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🚀 Step 5: Test Your DMARC Policy with Real Emails

Sometimes, even if your DMARC record looks fine, emails still fail authentication.

✅ How to Check

Send a test email from your domain to a Gmail account and check the headers:

1. Open the email in Gmail.

2. Click More > Show Original.

3. Look for Authentication-Results:

   iniCopyEditdmarc=fail (p=reject)
   

🔧 How to Fix

• If SPF or DKIM fails, check Step 4 again.
• If DMARC fails but SPF/DKIM pass, ensure your DMARC policy aligns with your email traffic (try p=none for testing).

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✅ Final Checks: DMARC Best Practices

Once your DMARC record is fixed, follow these best practices to prevent future issues:

✔️ Use “p=none” at first, then move to quarantine or reject gradually. ✔️ Regularly check DMARC reports to detect unauthorized email activity. ✔️ Monitor SPF & DKIM alignment to prevent DMARC failures. ✔️ Use YourDMARC to analyze and optimize your DMARC setup easily.

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🔹 Need Help? YourDMARC Can Fix It!

Still having trouble? YourDMARC simplifies DMARC setup and reporting—helping you stay compliant and protect your domain from email fraud.

Run a DMARC Lookup Now!