smtp34216.ciberserver.com has no SRV records.
Question and response
Question
dig smtp34216.ciberserver.com. SRV
Answer
The response has no answer records.
Authority
smtp34216.ciberserver.com. 86400 SOA ns1.ciberserver.com. status.ciberconceito.com. 2018051400 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0