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What is DKIM Checker?
Verify DKIM (DomainKeys Identified Mail) records for any domain. DKIM adds a digital signature to emails proving they haven't been tampered with during transit and came from an authorized server.
Key Features
How to Use DKIM Checker
Enter the domain name
Enter the DKIM selector
Click Submit to verify
Review the DKIM record details
Common Use Cases
Tips & Best Practices
Common selectors: "google" for Google Workspace, "selector1" for Microsoft 365
Use 2048-bit keys for stronger security
DKIM works alongside SPF and DMARC for complete email authentication
Frequently Asked Questions
What is a DKIM selector?
A selector is a prefix used to locate the DKIM public key in DNS. Common selectors include "default", "google", "selector1", etc.
Why is DKIM important?
DKIM proves emails are genuinely from your domain and haven't been modified in transit. It improves deliverability and prevents spoofing.
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DKIM Checker is part of our Network tools collection at AllInAOne. Use our free online tools for all your network needs — no registration required.