This article covers the SPF and DKIM authentication processes for Netcore and how they are managed in Valimail. While only one of the two authentication methods is required for an email to pass DMARC, our recommendation is to configure both whenever possible.

Netcore uses a dedicated subdomain setup for DKIM and SPF configuration.

1. You will first need to add a sender domain in Netcore Email API.

2. Once you have added a sender domain in Netcore Email API, the system asks you to configure two TXT records on your domain's DNS settings. The primary objective of adding these records is to authenticate Netcore Email API servers to send your emails.

3. The first TXT record is to verify the ownership of your domain and authenticate your domain to send emails using Netcore Email API. You will need to add the Netcore service to your domain's Configuration in Valimail Enforce.

4. The second TXT record which the system asks to add is primarily for DKIM validation. It is a method to validate the authenticity of the emails. You will need to add the DKIM key in Valimail Enforce.

5. Once you have added these values in your settings, Press the Check DNS Records button to verify.

You can find the instructions to set up DKIM and SPF for Netcore here.

You can find more detailed information on how to add a DKIM key in Valimail, here:

Once you establish that Netcore is an authorized sender for your domain, you will need to add the service in your Enabled Senders.

You will find more detailed information on how to add a service for your domain in Valimail, here:

Note: We encourage you to use the comment section for any useful information about your sending service, such as the name of the service owner, change request ticket numbers, etc.