DNS zone in user panel??

Hi,

I added a domain through the user panel, but please look at the picture http://prntscr.com/od88jd  - there are no names of recordings and appeared "@" ... Before it was not like that?!?


If I delete the MX record and then I want to add it, I get this   http://prntscr.com/od832h

What settings should be here    http://prntscr.com/od8bzf   

BR
Venty

Record name can be @ or the domain name

Then the cache should be 14400, priority is 5 then mail server hostname is the FQDN of the server e.g server.example.com