This article covers the SPF and DKIM authentication processes for Mailgun by Sinch 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.

1. Login to your Mailgun account.

2. Go to the Domains tab

3. Add your domain in the Domain name box.

4. Choose your DKIM key length. Longer keys equal more protection from spammers, so we recommend you to chose the 2048 option.

5. On the domain settings page, you will find the DKIM records generated for your domain in the Domain Verification & DNS section.

6. Copy the DKIM record key value provided - then you need to go and add this DKIM keys in Valimail Enforce.

7. After you publish the Mailgun DKIM key in Valimail Enforce, log back into your Mailgun account, and check for a verified status (a green verification badge) against your domain name to confirm that your domain has been verified and set up with DKIM email authentication.

You can find the instructions on how to set up DKIM in Mailgun here.

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

Once you establish that Mailgun 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.