smtp.saviv.net has no MX records.
Question and response
Question
dig smtp.saviv.net. MX
Answer
The response has no answer records.
Authority
saviv.net. 86400 SOA dns.site5.com. root.localhost.localdomain. 2022061003 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0