terra.bbbell.com has no MX records.
Question and response
Question
dig terra.bbbell.com. MX
Answer
The response has no answer records.
Authority
bbbell.com. 86400 SOA dns1.bbbell.it. hostmaster.bbbell.it. 2026020401 28800 2400 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0