inkvizitor68sl@malygos:~$ host -t NS emailsendserver.ru
emailsendserver.ru name server ns2.reg.ru.
emailsendserver.ru name server ns1.reg.ru.
inkvizitor68sl@malygos:~$ host -t MX emailsendserver.ru
emailsendserver.ru mail is handled by 10 mail.emailsendserver.ru.
inkvizitor68sl@malygos:~$ host mail.emailsendserver.ru.
mail.emailsendserver.ru has address 37.1.194.53