stratostel.com has no MX records.
Question and response
Question
dig stratostel.com. MX
Answer
The response has no answer records.
Authority
stratostel.com. 86400 SOA pdns104.ultradns.com. tldadmin.iristel.com. 2021021404 86400 86400 86400 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0