mail.ugansk.net has no MX records.
Question and response
Question
dig mail.ugansk.net. MX
Answer
The response has no answer records.
Authority
ugansk.net. 3600 SOA ns1.ugansk.net. hostmaster.ugansk.net. 2019400469 10800 1800 36000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0