Question and response
Question
dig smtp-test.tcpro.io. CSYNC
Answer
The response has no answer records.
Authority
tcpro.io. 1800 SOA guss.ns.cloudflare.com. dns.cloudflare.com. 2395392318 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0