mail.afraid.org has no MX records.
Question and response
Question
dig mail.afraid.org. MX
Answer
The response has no answer records.
Authority
afraid.org. 3600 SOA ns1.afraid.org. dnsadmin.afraid.org. 2602220001 86400 7200 2419200 3600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0