Question and response
Question
dig spf.smtp.net. TXT
Answer
spf.smtp.net. 3600 TXT "v=spf1 ip4:185.71.125.0/24 ip4:185.71.127.0/24 ip4:185.71.124.0/24 ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0