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SendGrid DKIM Failing: Configure DKIM Signatures

Your SendGrid DKIM signature validation is failing

Fix within 24 hours.

Check SendGrid DKIM:

1

In SendGrid console, verify domain

2

Check DKIM DNS records exist

3

Use DKIM record checker to confirm

What Could Be Causing This?

SendGrid DKIM Not Published in DNS

Most Common
InboxEagle Detects This ✓

DKIM CNAME records missing from DNS.

How to confirm:

Check SendGrid domain settings and run DKIM checker.

Fix Playbook

Step 1: Publish SendGrid DKIM Records

HoursImpact: High
  1. In SendGrid, initiate domain verification
  2. Copy DKIM CNAME record
  3. Add to your DNS
  4. Wait for propagation and verify in SendGrid

SendGrid-Specific Note:

SendGrid DKIM is a simple CNAME record in DNS.

Prevention Checklist

  • Verify DKIM records are published
  • Monitor DKIM status weekly

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Frequently Asked Questions

What DKIM format does SendGrid use?
SendGrid uses a simple CNAME record format for DKIM.
Free Checklist

The exact checklist used by 2,000+ email senders to diagnose and fix inbox placement issues — free.

  • Authentication setup (SPF, DKIM, DMARC)
  • Sender reputation signals to monitor
  • List hygiene benchmarks
  • Content & engagement red flags

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