Squarespace will autofill domain names for host addresses when adding records, so you will need to trim down your provided records to get them connected.
1 Log into your Squarespace account and navigate to it's DNS section.
2 Add Your MX Record
3. Add your SPF Record
4. Add your DKIM Record
For your host, use "mail.domainkey"
5 Add Your DMARC Record
For your host, use "_dmarc"
