Why my DKIM records are automatically appended with domain?

[dominik.zuk]

What is the name of the domain?

automaize.pl

What is the error message?

My DKIM records from Microsoft Exchange are appended with “.automaize.pl”

What is the issue you’re encountering

DKIM passing is failing

What steps have you taken to resolve the issue?

1. Verify pair records from Outlook and their instruction. All is green in Microsoft Exchange. How to use DKIM for email in your custom domain - Microsoft Defender for Office 365 | Microsoft Learn
2. Verify DKIM signatures on dkimvalidator.com. Here signature is failing
3. Verify DKIM signature in “original email” on GMAIL. DKIM is failing
4. Triple checked DNS records in Cloudflare.

What feature, service or problem is this related to?

DNS records

What are the steps to reproduce the issue?

1. Open https://dkimvalidator.com/
2. Send an email from my domain to generated email in this portal
3. Open results after 30 seconds
4. Check DKIM signature

Screenshot of the error

[dominik.zuk]

I also tried to recreate records but it keeps adding it

[Laudian]

@dominik.zuk

My DKIM records from Microsoft Exchange are appended with “.automaize.pl”

That’s how it is supposed to be. Every DNS record you create will always end with your domain.

[dominik.zuk]

hey Laudian
Thanks for quick reply. Assuming requirements from Microsoft documentation, I shouldn’t have it added. As you can see on screenshots, DKIM are failing for my DNS. Does “.automaize.pl” added in selector1._domainkey influence if DKIM fail or not?

[Laudian]

@dominik.zuk

I shouldn’t have it added.

Yes, you should. All DNS records need to have your domain at the end, or resolvers wouldn’t find it.

You said Microsoft verified the record was good, so if you still have problems, you need to discuss those with Microsoft.

[dominik.zuk]

Let me check with them, thanks for clarification