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Authenticate your sending domain

Domain authentication is the process of verifying that an email is sent from the sender they claim to be. It is an important process in blocking harmful content such as phishing scams. Most commonly used email authentication standards are SPF, DKIM, and DMARC. Domain authentication is required in order to send email from your Inflection account.

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What is SPF, DKIM, and DMARC?

These three are email authentication standards for the reduction of spam.
  • SPF helps verify whether the sender’s IP address is allowed to send on behalf of the sender’s domain.
  • DKIM helps to confirm that the email message was not altered during the sending process.
  • DMARC establishes a method that allow domain owners to state what actions that should be handled when the email fails on authorization test.

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Set up domain authentication

To set up domain authentication, you must install DNS records provided by Inflection (via SendGrid) to your DNS or hosting provider:
  1. Determine who your hosting provider is and make sure you have access required to install DNS records.
  2. If you don’t have access to your DNS or hosting provider, determine who in your company is able to make DNS modifications for your domain. A good place to start is with your IT organization.
  3. Add DNS records provided by Inflection (via SendGrid) to your DNS host. Once added, click I’m Done button on the email sent by Inflection (via SendGrid).
  4. For additional instruction and troubleshooting tips, visit Sendgrid’s doc on troubleshooting sender authentication.