mail01.ecritel.cn has no MX records.
Question and response
Question
dig mail01.ecritel.cn. MX
Answer
The response has no answer records.
Authority
ecritel.cn. 600 SOA dns25.hichina.com. hostmaster.hichina.com. 2026010913 3600 1200 86400 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0