Where do I publish the DKIM record for Namecheap?

You publish DKIM as a TXT record at selector._domainkey.yourdomain.com, where selector is the name given by Namecheap.

How do I know if DKIM is working?

Send a message to a Gmail inbox and look at Show original. If DKIM shows PASS for your domain, the record is working.

Yes. Many providers support multiple selectors to rotate keys or support several sending systems.

Step by step DKIM setup for Namecheap: complete instructions, examples, verification commands, and common pitfalls.

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This is a reference guide for configuring DKIM on Namecheap. Use it while editing DNS or when troubleshooting deliverability.

Tip: Here’s a reliable, copy-pasteable way to set up DKIM using Namecheap. Then verify everything with the InboxGreen Free Checker.

Namecheap uses @ for the root domain in the Host field. For DMARC, use _dmarc as the host. For DKIM, use selector._domainkey.
Namecheap sometimes splits long TXT values in the UI. Verify the final published record with dig to make sure it resolved correctly.
Namecheap Dashboard → Domain List → Manage → Advanced DNS.

In Namecheap, generate a DKIM key and note the selector. Providers often suggest something like selector1.

Namecheap Dashboard → Domain List → Manage → Advanced DNS.

Create a TXT record at host selector._domainkey (replace selector with your actual selector name).
Paste the full value starting with v=DKIM1; k=rsa; p= and save.
Wait for DNS propagation.

Send a test email to a Gmail address and use “Show original” to confirm “DKIM: PASS”.

Or run:

dig TXT selector._domainkey.yourdomain.com +short

Using the wrong host so the record becomes selector._domainkey.yourdomain.com.yourdomain.com.
Breaking the value by wrapping or truncating the TXT string.
Publishing a record for the wrong selector and then validating on another.

Pro tip: Turn on InboxGreen Monitoring to check these records daily and get alerts if something breaks.

Check SPF, DKIM, DMARC and List-Unsubscribe for your domain in seconds.