SPF entries in your domains DNS are not configured to match with Zoho.Please configure SPF to ensure better email delivery.

SPF entries in your domains DNS are not configured to match with Zoho.Please configure SPF to ensure better email delivery.

Hi Support Team,

I kept receiving this error:
SPF entries in your domains DNS are not configured to match with Zoho.Please configure SPF to ensure better email delivery.

I am not able to understand this and what does this mean and why is this occurring?
Can you please help with this?