DNS Setup for Squarespace
Create a Sender Domain in your SMTP2GO dashboard as per the instructions here.
Log in to Squarespace. Go to Settings > Domains. Select the appropriate domain and choose the Advanced Settings.
To create a DKIM record, Select CNAME option from the Record drop-down menu.
Enter the Hostname we recommend into the HOST field.
Enter the Value that we advise for your CNAME record into the DATA (Enter alias data) field, then click the ADD button. Click the Save button.
You can find the "Hostname" and "Value" in the "Sending > Verified Senders > Sender domains" section of your SMTP2GO dashboard.
Repeat step 3 for each required CNAME record.