mailrelay.psmanaged.com has no MX records.
Question and response
Question
dig mailrelay.psmanaged.com. MX
Answer
The response has no answer records.
Authority
psmanaged.com. 900 SOA ns1.plusserver.com. hostmaster.plusserver.com. 2026022301 3600 900 3600000 900
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0