Question and response
Question
dig _spf.mailer.twinfield.com. TXT
Answer
_spf.mailer.twinfield.com. 300 TXT "v=spf1 ip4:52.142.236.2/32 ip4:52.142.236.5/32 ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0