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Sending domain verification

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Once you add a sender domain in Netcore Email API (CPaaS), the system will prompt you to configure two TXT records in your domain’s DNS settings. These records are required to authenticate Netcore Email API servers to send emails on your behalf.

After updating your DNS settings, click ‘Check DNS Records’ to verify.

SPF Validation

The first TXT record is used for SPF (Sender Policy Framework) validation. This verifies domain ownership and authorizes your domain to send emails using Netcore Email API (CPaaS).

You can have only one SPF record in your DNS. Once you add a domain, the system checks for an existing SPF entry.
If one exists, we append our SPF details to your current record to preserve your existing configuration. You’ll need to replace the old SPF record with the updated one provided.

SPF records typically begin with:
v=spf1 ...

DKIM Validation

The second TXT record is for DKIM (DomainKeys Identified Mail) validation. DKIM ensures the authenticity and integrity of your emails.

Unlike SPF, DKIM does not need to be unique, so you can add a new TXT record with the hostname and value provided by the system.

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TTL Dependency

DNS verification typically completes within a few minutes. However, due to DNS caching and TTL (Time-To-Live), it may take longer for changes to propagate.
If your domain is still not verified, please wait a bit longer or contact us via online chat or at [email protected].

Domain Approval

Once your domain is verified, Netcore attempts to automatically approve it for sending.
In some cases, the domain is manually reviewed by our compliance team. This process typically takes 1–2 hours, but during peak times, may take up to 12–24 hours.

To help us review your domain, a form will appear on the domain settings page after verification. Please fill it out accurately.

Possible reasons for domain rejection

  • No live website representing the business.
  • Website redirects to a different, unrelated site.
  • Site appears suspicious or phishing-related.
  • Domain is associated with a blacklisted business type.
  • Missing or non-functional subscription/signup form.

Updated about 16 hours ago