moiz Is there are Mailing Config in the panel like Creating a mail address with the domain and managing the mail with webmail or squirrrelmail.
TrK headover to appstore and install the mail server plugin/addon so you can create mail accounts and access them as for webmail client you use the preinstalled one or setup a new one under your own domain you just need some details about ports and you are good to go.
moiz ok i have installed it but when i add the domain thesupportadmin.com with the A record it still gives the same error.
JAY can you please remove dot after domain.com it should be like ns1.thesupportadmin.com but you added like ns1.thesupportadmin.com.
TrK You have to get your nameservers registered with your domain name registrar(they are often called glue records) before you can use the nameserver without that your domain will only get the nameserver invalid queries upon lookup.