mail128.outbound.eversrv.com has no SRV records.
Question and response
Question
dig mail128.outbound.eversrv.com. SRV
Answer
The response has no answer records.
Authority
eversrv.com. 1800 SOA leonard.ns.cloudflare.com. dns.cloudflare.com. 2397811322 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0