This article covers the SPF and DKIM authentication processes for TurboSMTP 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 TurboSMTP emails

The DKIM configuration for turboSMTP involves the creation of a TXT-type records for the subdomain “turbo-smtp._domainkey” as shown below:




k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDT3MWLni6so1q9eQggRYBCLHFjohZkCnYHH8gZNDBm6zRrodRVpWpJQW7x3cWWiuBhS1X0IfBB80l5tqFa+yc+mVgnk8tkUzOHFbPQPp4fi7egTpMtsQW/ZMrxw73SItNvPr72qvJTYZNPxarMx+ULjEWybcfEdXHPY8jslGcpCwIDAQAB

Important: If you manage DKIM in Valimail, yo uwill need to add the key selector and value from above on your domain's Configuration page in Valimail Enforce.

To guarantee an optimum delivery rate and prevent your emails from ending up in spam, after adding the TXT DKIM key in Valimail Enforce as shown below, you have to activate the Domain Authentication mode in your turboSMTP account. Here are the simple steps to follow:

1. Log in to your turboMSTP account.

2. From the main menu select Settings.

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3. In the DNS Records box, click the Edit button.

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4. Then click on the gray switch labeled Disabled.

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5. Wait for the confirmation message, the switch will turn green and its label will change to Enabled.

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

Add a TurboSMTP 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 turboSMTP 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 TurboSMTP emails

Once you establish that TurboSMTP 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 turboSMTP 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.