Question and response
Question
dig spf.serverdomain.org. TXT
Answer
spf.serverdomain.org. 3600 TXT "v=spf1 include:spf1.serverdomain.org include:spf2.serverdomain.org include:spf3.serverdomain.org -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0