How to verify a domain in Google Postmaster Tools?

Key findings

• Primary domain verification: Verifying your root domain (e.g., companyname.com) first often simplifies subdomain verification, as subdomains can sometimes be automatically recognized once the main domain is verified.
• DKIM alignment: Google Postmaster Tools bases its data on the domain found in your DKIM signature (the 'd=' tag). Ensure you are attempting to verify the domain that matches this signature.
• DNS record accuracy: Typos in the TXT or CNAME record provided by Google are a frequent cause of verification failure. Double-check the entire string for accuracy.
• Subdomain verification: If you are sending emails using a specific subdomain (e.g., mail.yourdomain.com), you might need to explicitly verify that subdomain in GPT, especially if it differs from your primary DKIM signing domain. Learn more about setting up GPT for subdomains.
• Propagation time: After adding a DNS record, it can take some time for changes to propagate across the internet. Google recommends waiting at least 24-48 hours before re-attempting verification if it fails initially.

Key considerations

• TXT vs. CNAME: While TXT records are commonly used for verification, some users report more consistent success with CNAME verification. If TXT isn't working, consider trying the CNAME method Google provides.
• DNS provider interface: The process of adding DNS records varies slightly between DNS providers (e.g., Cloudflare, GoDaddy, your web host). Refer to your specific provider's documentation for detailed instructions.
• Root domain first: For complex setups with multiple subdomains, establishing verification for the root domain first can streamline the process for subsequent subdomain additions.
• Google's guidance: Always consult Google's official documentation on domain verification for the most accurate and up-to-date instructions.

Key opinions

• Typos are common: Many marketers suggest that verification issues often stem from simple typos in the TXT record Google provides. A careful re-entry can resolve the problem.
• DKIM signature domain: It is critical to verify the specific domain used in your DKIM signature's 'd=' tag, as this is what Google Postmaster Tools uses for its data.
• Root domain priority: Verifying the main domain first can simplify the process for any associated subdomains, potentially allowing them to be verified without additional DNS changes. This is similar to how shared domain access works.
• CNAME verification: Some marketers find CNAME verification more reliable than TXT record verification when encountering persistent issues. It's a useful alternative to consider.

Key considerations

• DNS propagation: Allow sufficient time for DNS changes to propagate globally after adding your verification record. Immediate re-attempts might fail if propagation hasn't completed.
• Subdomain specificity: If you use a deep subdomain for sending (e.g., mta.info.companyname.com), you may need to verify that exact subdomain rather than an intermediate one.
• Account access: Ensure you have the necessary permissions to modify DNS records for your domain. This often requires coordination with your IT department or domain administrator. Managing user access within GPT is a separate but related step.
• Alternative methods: While most common methods involve TXT or CNAME, understanding all verification options (like those listed by WP Mail SMTP) can be beneficial if standard approaches fail.

Key opinions

• Exact domain matching: Experts confirm that Google Postmaster Tools requires verification of the precise domain or subdomain that is actively signing your emails via DKIM. Any mismatch can prevent verification.
• DNS record types: Both TXT and CNAME records are valid for GPT verification. If one method fails, it's advised to explore the other as a potential solution.
• Subdomain handling: While verifying the root domain can sometimes cover subdomains, explicit subdomain verification is often necessary if the subdomain is used as the signing domain. This relates to how GPT tracks domain reputation.
• DNS propagation delays: DNS changes, including verification records, are not instant. Experts advise patience and using DNS lookup tools to confirm propagation before re-attempting verification. Sometimes, GPT data can appear delayed for this reason.

Key considerations

• Thorough checks: Before concluding a GPT verification failure is complex, perform basic checks for typos, correct record type (TXT or CNAME), and proper placement within your DNS settings.
• DKIM alignment is key: Ensure the domain you are trying to verify is the one used in the 'd=' tag of your DKIM signature. This is fundamental to how GPT correlates data.
• DNS caching: Be aware of DNS caching. Even after propagation, local caches might take time to update. Using a public DNS resolver (like Google's 8.8.8.8) for testing can help.
• Tooling: Leverage online DNS lookup tools to confirm your TXT or CNAME record is publicly visible before attempting verification in GPT. This helps isolate issues.

Key findings

• Verification methods: Google provides a unique verification token that must be added as either a TXT record or a CNAME record in your domain's DNS settings.
• Domain ownership: The purpose of verification is to prove ownership or control over the domain from which emails are sent, enabling Google to provide sensitive deliverability data.
• Subdomain inclusion: For subdomains used for sending (e.g., marketing.yourdomain.com), separate verification might be required if the data is not rolled up from the parent domain. This is similar to how DMARC, DKIM, and SPF are set up.
• Immediate verification: After adding the DNS record, you must return to the Google Postmaster Tools interface and click the 'Verify' button to prompt Google to check for the record.

Key considerations

• DNS propagation time: Google explicitly states that DNS changes can take up to 24-48 hours to propagate fully, and verification attempts during this period may fail.
• Exact match: The verification token must be entered exactly as provided, without any extra spaces or characters, to ensure successful recognition by Google's systems.
• Authentication standards: Google Postmaster Tools relies on proper SPF and DKIM setup for data reporting, making correct domain verification a foundational step.
• User permissions: Only authorized users with Google account access and appropriate domain permissions can add and verify domains in Postmaster Tools.