Question and response
Question
dig s433.smtp-spf.sureserver.com. TXT
Answer
s433.smtp-spf.sureserver.com. 14400 TXT "v=spf1 exists:%{i}.s433.smtp-spf.sureserver.com include:spf-gates.sureserver.com"
Authority
s433.smtp-spf.sureserver.com. 25920 NS ns1.s433.sureserver.com.
s433.smtp-spf.sureserver.com. 25920 NS ns2.s433.sureserver.com.
Additional
ns1.s433.sureserver.com. 14400 A 192.252.154.25
ns2.s433.sureserver.com. 14400 A 192.252.155.25