SPF(supported) / (dedicated subdomain)

This article covers the SPF and DKIM authentication processes for SMTP2GO 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 SMTP2GO emails

Sender Domains

For maximum email delivery rates and better branding, we recommend adding any domain names (that you send emails from) to the "Sending -> Verified Senders -> Sender domains" section. Adding a verified sender domain means that SPF and DKIM are automatically handled by us, and use DNS records at your own domain name.

To set up a verified sender domain, follow the steps below:

Step 1

From the left-hand menu, make your way to the Sending -> Verified Senders -> Sender domains page in your SMTP2GO control panel.

In the Sender domains section, click Add sender domain, enter your domain in the textbox and click Continue with this domain. For example, if you send your emails from hello@exampledomain.com then you would enter exampledomain.com.

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Step 2

Publish the DKIM key on your domain's Configuration page in Valimail Enforce.

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As long as your domain is showing as Verified on your Verified Senders page, it is setup and working correctly.

Step 3

To set your tracking domain (for any links in your email) to use secure "https" instead of "http", click the Enable hosted SSL checkbox and click Verify. If the previous three steps have been completed and verified, you won't need to do anything else.

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You can also find the instructions on how to set up DKIM and SPF for SMTP2GO, here.

Add an SMTP2GO 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 two DKIM keys in your configuration, by clicking on Add a DKIM key

    b. Enter the selector name, CNAME target value, associate the key/s with SMTP2GO 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 SMTP2GO emails

Once you establish that SMTP2GO 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 SMTP2GO 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.