ntp.mana.pf has no MX records.
Question and response
Question
dig ntp.mana.pf. MX
Answer
The response has no answer records.
Authority
mana.pf. 3600 SOA ns01.mana.pf. system.mana.pf. 2025121500 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0