Question and response
Question
dig newsletter.key-systems.net. TXT
Answer
newsletter.key-systems.net. 43200 TXT "v=spf1 ip4:109.234.108.0/23 ip4:5.196.225.75 ip4:185.33.180.192/27 ~all"
Authority
key-systems.net. 3600 NS pdns109.ultradns.biz.
key-systems.net. 3600 NS pdns109.ultradns.com.
key-systems.net. 3600 NS pdns109.ultradns.net.
key-systems.net. 3600 NS pdns109.ultradns.org.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0