Question and response
Question
dig mailgate.etelecom.ru. NS
Answer
mailgate.etelecom.ru. 5 CNAME mx.etelecom.ru.
mx.etelecom.ru. 5 CNAME mx.gblnet.ru.
Authority
gblnet.ru. 10609 SOA ns.gblnet.ru. vvv.gblnet.ru. 2026022601 10800 1200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0