As part of your account set up, if you are going to use email addresses with a custom domain (ex. [email protected]), there are certain DNS records that you will want to configure for your domain – SPF and DKIM records.
The SPF record (sender policy framework) is set up as a TXT record in your domain’s DNS zone. You’ll want to make sure the record includes both Constant Contact and any other SPF entries needed for your email accounts to work properly with other service providers (such as Google or Microsoft). Here is an example of a valid Constant Contact SPF record on its own:
v=spf1 include:spf.constantcontact.com ~all
and here is the SPF record to allow for Constant Contact and Microsoft:
v=spf1 include:spf.protection.outlook.com include:spf.constantcontact.com ~all
To learn more about SPF, please visit:
DKIM is another method for improving email deliverability. This one is a bit more complex. Constant Contact allows for authentication of a single domain per account. To do so, begin by logging into your Constant Contact account and choosing “My Account” in the top right menu. Next, click on “Advanced Settings” and then “Add Self-Authentication.” Follow the remaining steps to generate the appropriate DNS record (either a TXT or CNAME are valid) for your domain. You’ll then take the record that is generated and add that to your domain name’s zone file.
And just in case you want to read a little more, here is an article on authentication in general: