ibs4-rmm.interactivedns.com has no MX records.
Question and response
Question
dig ibs4-rmm.interactivedns.com. MX
Answer
The response has no answer records.
Authority
interactivedns.com. 300 SOA primary.interactivedns.com. nettigritty.nettigritty.com. 2026030302 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0