smtp34212.ciberserver.com has no SRV records.
Question and response
Question
dig smtp34212.ciberserver.com. SRV
Answer
The response has no answer records.
Authority
smtp34212.ciberserver.com. 86400 SOA ns1.ciberserver.com. status.ciberconceito.com. 2017092103 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0