1. This is basic dns template:
__base__ A - 111.112.113.114
cp A - 111.112.113.114
mail A - 111.112.113.114
ns A - 111.112.113.114
ns1 A - 111.112.113.114
ns2 A - 111.112.113.114
ftp CN - __base__
lists CN - mail
webmail CN - mail
www CN - __base__
default.dnst MX 10 mail.default.dnst
ns1.default.dnst NS - ns1.default.dnst
ns2.default.dnst NS - ns2.default.dnst
2. With above dns template, dns for domain.com will be:
__base__ A - 111.112.113.114
cp A - 111.112.113.114
mail A - 111.112.113.114
ns A - 111.112.113.114
ns1 A - 111.112.113.114
ns2 A - 111.112.113.114
ftp CN - __base__
lists CN - mail
webmail CN - mail
www CN - __base__
domain.com MX 10 mail.domain.com
ns1.domain.com NS - ns1.domain.com
ns2.domain.com NS - ns2.domain.com
3. In domain registrar, ns1 and ns2 must be match according your dns setting.