ZOHO reporting DKIM entries are not configured, when they have been configured and verified by 3rd parties

ZOHO reporting DKIM entries are not configured, when they have been configured and verified by 3rd parties

Why is ZOHO reporting to my organisation users the following: "The DKIM entries in your domain's DNS records are not configured. Please contact your administrator for configuring DKIM to ensure optimal RSVP invite delivery."

When I have configured the DKIM as per instructed and verified it using several 3rd parties