Question and response
Question
dig smtp.sip.is. TXT
Answer
smtp.sip.is. 1800 TXT "v=spf1 mx a ip4:185.111.36.0/24 ip4:178.19.55.155/32 -all"
Authority
sip.is. 86400 NS ns01.ns.sip.is.
sip.is. 86400 NS ns02.ns.sip.is.
sip.is. 86400 NS ns03.ns.sip.is.
Additional
ns01.ns.sip.is. 86400 A 178.19.48.11
ns02.ns.sip.is. 86400 A 178.19.48.12
ns03.ns.sip.is. 86400 A 188.166.99.137