Question and response
Question
dig us1.vtigermail.com. TXT
Answer
us1.vtigermail.com. 3600 TXT "v=spf1 ip4:52.55.52.72 -all"
Authority
vtigermail.com. 3600 NS pdns02.domaincontrol.com.
vtigermail.com. 3600 NS pdns01.domaincontrol.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0