We request you to share the complete domain details in an email to support (at) zohomail (dot) com. Our experts will guide you on updating the MX records over x10hosting.com.
For future reference:
MX Records: cPanel --> MX Entry --> Select Domain --> Add a New Record --> Input Priority and Destination --> Click [Add New Record] --> Email Routing --> Select "Remote Mail Exchanger" and click the [Change] button. https://x10hosting.com/wiki/Modifying_MX_Entries
SPF: cPanel --> Email Authentication --> SPF --> At this point, contact your provider if you don't know what you are doing.