Question and response
Question
dig serverdomain.org. TXT
Answer
serverdomain.org. 3600 TXT "v=spf1 include:spf.serverdomain.org ip4:176.28.21.205/32 a mx -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0