Confirm Role Doesn't Work

Betty Ortiz-Valdes Website Admin for Cutler Bay Toastmasters Club#1412303

Agenda was emailed to Members to confirm or select role to participate. The confirm role option in agenda via email does not work.

Please see error message below. Thank you for your assistance below. Betty Ortiz-Valdes

Final-Recipient: rfc822; confirmrole.22999607@cutlerbaytoastmasters.com
Original-Recipient: rfc822;confirmrole.22999607@cutlerbaytoastmasters.com
Action: failed
Status: 5.1.1
Remote-MTA: dns; smtp.secureserver.net
Diagnostic-Code: smtp; 550 5.1.1
<confirmrole.22999607@cutlerbaytoastmasters.com> Recipient not found.
< x.co/irbounce >
Laurie Dougherty
LaurieDougherty@Icloud.com

The agenda works fine.
Your domain is not setup correct to work with FTH email

remove
cutlerbaytoastmasters.com. 3600 IN MX 0 smtp.secureserver.net.
cutlerbaytoastmasters.com. 3600 IN MX 10 mailstore1.secureserver.net.

Add
mail.cutlerbaytoastmasters.com. IN A 50.19.253.65

Add
cutlerbaytoastmasters.com. IN MX 0 mail.cutlerbaytoastmasters.com