mail.dnshostservices.com has no SRV records.
Question and response
Question
dig mail.dnshostservices.com. SRV
Answer
The response has no answer records.
Authority
dnshostservices.com. 900 SOA ns1.lws-hosting.biz. hostmaster.dnshostservices.com. 1703748309 25200 3600 604800 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0