After change DNS. email doesnot work. Domain name - practic.bz.

In Control panel error  http://joxi.ru/KAx7MLoI4Rgw92.

Test on  https://mxtoolbox.com/ are correct  http://joxi.ru/Q2KBqQYU9W1Pam.
And in panel  http://joxi.ru/zANjBWYtlKWPPA.

Error after send email  http://joxi.ru/DmB0RPLtN8oXwA.

Where is problem? 

Help me please.