Question and response
Question
dig _spf.iis.se. TXT
Answer
_spf.iis.se. 3600 TXT "v=spf1 include:sendgrid.net include:spf.protection.outlook.com a:centrlists.org" " ip4:45.155.96.0/22 ip4:91.226.36.0/23 ip4:213.108.24.0/23 ip4:62.209.161.227 ip4:54.240.55.102 ip4:54.240.55.103 ip4:159.253.30.216 ip6:2001:67c:124c::/48 ip6:2a10:ba00::/32 -all"
Authority
iis.se. 3600 NS nsa.dnsnode.net.
iis.se. 3600 NS nsp.dnsnode.net.
iis.se. 3600 NS nsu.dnsnode.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0