smtp.intelliplan.eu has no MX records.
Question and response
Question
dig smtp.intelliplan.eu. MX
Answer
The response has no answer records.
Authority
intelliplan.eu. 300 SOA ns1.p201.dns.oraclecloud.net. hostmaster.intelliplan.eu. 1049 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0