mail10.usbank.com has no MX records.
Question and response
Question
dig mail10.usbank.com. MX
Answer
The response has no answer records.
Authority
usbank.com. 180 SOA ns2.usbank.com. domainadmin.usbank.com. 2026021831 28800 3600 604800 180
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0