Question and response
Question
dig rtcomm.ru. MX
Answer
rtcomm.ru. 21600 MX 0 mx1.atmosphere.facct.ru.
rtcomm.ru. 21600 MX 5 mx2.atmosphere.facct.ru.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0