ipacct.us has no MX records.
Question and response
Question
dig ipacct.us. MX
Answer
The response has no answer records.
Authority
ipacct.us. 14400 SOA ns.ipacct.bg. noc.ipacct.com. 2025051601 10800 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0