smtp2.soneribank.com has no MX records.
Question and response
Question
dig b60bc9e1bb2c4e29ac75bdd628e2bf27.pacloudflare.com. MX
Answer
The response has no answer records.
Authority
pacloudflare.com. 1800 SOA brenda.ns.cloudflare.com. dns.cloudflare.com. 2397460254 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0