Question and response
Question
dig _spf.supportsystem.com. TXT
Answer
_spf.supportsystem.com. 300 TXT "v=spf1 a:mailsvr.supportsystem.com a:mail1.dl.supportsystem.com a:mail2.dl.supportsystem.com a:mail1.uk.supportsystem.com a:mail2.uk.supportsystem.com ?all"
Authority
supportsystem.com. 172800 NS ns-1304.awsdns-35.org.
supportsystem.com. 172800 NS ns-1700.awsdns-20.co.uk.
supportsystem.com. 172800 NS ns-83.awsdns-10.com.
supportsystem.com. 172800 NS ns-951.awsdns-54.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0