Question and response
Question
dig spf.sigma1.postal.cyso.net. TXT
Answer
spf.sigma1.postal.cyso.net. 14400 TXT "v=spf1 ip4:37.46.142.163 ~all"
Authority
postal.cyso.net. 14400 NS anycast-eu.dns.cyso.eu.
postal.cyso.net. 14400 NS unicast-eu.dns.cyso.nl.
postal.cyso.net. 14400 NS anycast-global.dns.cyso.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0