How to Fix Google Workspace DKIM Authentication Issues?

Mar 27, 2026
Zavric Thorne

In Google Workspace, DKIM (DomainKeys Identified Mail) authentication issues occur when the sending server, DNS records, and receiving server are not aligned properly. DKIM works by adding a digital signature to your outgoing messages, which receiving servers verify using a public key stored in your domain’s DNS records. In case of any mismatch or error, the authentication will fail.

When you are fixing the Google Workspace DKIM authentication issues, you may encounter these technical challenges:

Incorrect DKIM record configuration
Syntax errors in the DNS entry
Third-party email services interference
Email not signed with DKIM

Tags: Google Workspace DKIM Authentication Issue

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