Question and response
Question
dig _spf.mailrelay.rrpproxy.net. TXT
Answer
_spf.mailrelay.rrpproxy.net. 3600 TXT "v=spf1 include:spf.key-systems.net ~all"
Authority
rrpproxy.net. 3600 NS pdns109.ultradns.biz.
rrpproxy.net. 3600 NS pdns109.ultradns.com.
rrpproxy.net. 3600 NS pdns109.ultradns.net.
rrpproxy.net. 3600 NS pdns109.ultradns.org.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0