vdconline.vn has no MX records.
Question and response
Question
dig vdconline.vn. MX
Answer
The response has no answer records.
Authority
vdconline.vn. 86400 SOA ns1.vdconline.vn. vdconline.tld. 2025062979 28805 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0