Switched DNS provider - Does CNAME need to be updated?

Switched DNS provider - Does CNAME need to be updated?

Hi Zoho.  You host the email for my domain and I just switched my DNS service from Network Solutions to Hover.  I've updated the MX records on Hover.  I've checked and confirmed that the MX records are working and correct with MX Toolbox ( http://mxtoolbox.com).  Unfortunately, I'm not receiving any emails.  

Does the CNAME record on Hover need to be updated as well?  It currently points to "mail.hover.com.cust.hostedemail.com"