Question and response
Question
dig mailhost.telefonica.net. SRV
Answer
The response has no answer records.
Authority
telefonica.net. 900 SOA dns1.movistar.es. admondns.tsm.es. 2017050588 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0