Can you update your MX cached DNS records - Domain Not Resolved inside Zoho

Can you update your MX cached DNS records - Domain Not Resolved inside Zoho

Hi, I ve configured the domain ionclub.com.ar to use Zoho Mail.
From outside Zoho works fine (tested with gmail, gmail apps and hotmail).
Mxtoolbox.com told me that MX records are ok.
But between ionclub.com accounts, emails never get destination.
Can you check or update the MX records inside Zoho for my domain?
Or told me what can I do?

(I ve waiting over a week to ensure that is not a refresh time issue)

Thanks in advance.

Juan LB