halon01.reliablemail.org has no SRV records.
Question and response
Question
dig halon01.reliablemail.org. SRV
Answer
The response has no answer records.
Authority
reliablemail.org. 1800 SOA aron.ns.cloudflare.com. dns.cloudflare.com. 2396244391 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0