Question and response
Question
dig pfr.ru. MX
Answer
pfr.ru. 7200 MX 100 mail.pfr.ru.
Authority
pfr.ru. 7200 NS nsmt.rt.ru.
pfr.ru. 7200 NS ns2mt.rt.ru.
Additional
mail.pfr.ru. 7200 A 195.161.52.64
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0