The following guide is relevant for SMTP2GO customers, who have a domain name hosted with Bluehost.
Step 1
Log in to the cPanel of Bluehost.
Legacy: Go to the Domains section and click the Zone Editor.
Rock: Click the Domains tab from the side navigation menu, then select the Zone Editor option
Step 2
Go to the Select a Domain section and select the domain that you want to update from the Domain drop-down menu.
Step 3
To create a record, go to the Add DNS Record section.
Enter the Hostname we recommend into the Host Record field.
Note: You may only need to add the first part of the recommended hostname and not your full domain name to your DNS records as your provider may automatically add it.
Enter the desired TTL value into the TTL field. We recommend leaving the default value 14400.
Select the CNAME option from the Type drop-down menu.
Enter the Value that we advise for your CNAME record into the Points To field.
Click on the add record button.
You can find the "Hostname" and "Value" on the Sending > Verified Senders > Sender domains section of your SMTP2GO Dashboard.
Repeat step 3 for each required CNAME record.
Bluehost's documentation in regard to CNAME records can be found here, and they also offer a tutorial blog post here which may be helpful.