Question and response
Question
dig postmaster.validsender.link. PTR
Answer
The response has no answer records.
Authority
validsender.link. 1800 SOA kim.ns.cloudflare.com. dns.cloudflare.com. 2396765517 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0