mail.mefa.uz has no MX records.
Question and response
Question
dig mail.mefa.uz. MX
Answer
The response has no answer records.
Authority
mefa.uz. 10800 SOA hosting.scinet.uz. Alexandr\.perfect.gmail.com. 1770920130 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0