Question and response
Question
dig smtp.optimaitalia.com. DNAME
Answer
The response has no answer records.
Authority
optimaitalia.com. 600 SOA ns1.optimaitalia.com. noc.optimaitalia.com. 1229842182 10800 3600 604800 38400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0