smtptr36.fortimailcloud.com has no SRV records.
Question and response
Question
dig smtptr36.fortimailcloud.com. SRV
Answer
The response has no answer records.
Authority
fortimailcloud.com. 120 SOA ns3.fortinet.com. mis.fortinet.com. 2026014202 10800 15 604800 120
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0