To setup SPF records in your Windows Plesk Hosting account kindly follow the below steps.
1. Generate an SPF record by visiting
http://www.spfwizard.net/
2. Click on “DNS Settings” in your plesk panel.
3. Click on “Add Record”.
4. Select “TXT”
5. Using step 1. generated SPF record enter it in “TXT Record” field and leave the “Domain Name” field blank. Click OK to add the record
6. Click “Update” to apply changes.
