appmail.adwaresystems.com has no SRV records.
Question and response
Question
dig appmail.adwaresystems.com. SRV
Answer
The response has no answer records.
Authority
appmail.adwaresystems.com. 300 SOA ns3.afternic.com. dns.jomax.net. 2025100100 28800 7200 604800 300
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0