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


Configuring DKIM authentication for your AuthSMTP emails

To enable DKIM on your domain names please login to the control panel and go to Advanced Config -> DKIM Signing.

AuthSMT issues a unique TXT DKIM key for each domain name so your DKIM reputation cannot be affected by other senders.

The DKIM key uses a AuthSMTP specific 'selector' and the signing will only apply to messages sent via your AuthSMTP account.

You can also find the instructions on how to set up DKIM and SPF for AuthSMTP, here.

Add an AuthSMTP DKIM key in Enforce

1. Go to your domain's Configuration page in Valimail Enforce and publish the newly created DKIM key.

    a. Scroll down and add the DKIM key in your configuration, by clicking on Add a DKIM key

    b. Enter the selector name, the DKIM TXT value (the actual value is the entire string after the p= tag), associate the key with AuthSMTP and then click Add.

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

Configuring SPF authentication for your AuthSMTP emails

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

1. Please go to your domain's Configuration page in Enforce.

2. Click on the + sign from the Enabled Senders section:

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3. Choose AuthSMTP from the list of configurable senders and then click Enable:

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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.

As always, if you have any questions, please don't hesitate to submit a ticket.