Mail hosting for my domain has been disabled.

Mail hosting for my domain has been disabled.

I received this message just now: 

Dear Admin,
Mail Domain (domain name) has been disabled by our MXLookup-Task
Reason : MX not configured properly
Implications : Mails may not be fetched in your users Zoho Account
Current MX Records : (domain name) [ip address]
Valid Zoho MX Records : mx.zohocorp.com.[74.201.154.202, ] | mx2.zohocorp.com.[74.201.154.202, ] | mx.zohomail.com.[72.5.230.114, ] | mx2.zohomail.com.[72.5.230.119, ] | mx3.zohomail.com.[74.201.155.79, ] | 
Has anyone ever received this message? I have my MX records set up exactly like they should be according to Zoho's instructions. 

My mail still works, but why would it say the mail domain has been disabled?

Thanks for any assistance.