dstsys-a034.dstsystems.com has no SRV records.
Question and response
Question
dig dstsys-a034.dstsystems.com. SRV
Answer
The response has no answer records.
Authority
dstsystems.com. 3600 SOA inetdns1.ssnc.cloud. dns.cloudflare.com. 2396664716 10000 2400 604800 5400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0