osiris.chi1.ntfo.org has no MX records.
Question and response
Question
dig osiris.chi1.ntfo.org. MX
Answer
The response has no answer records.
Authority
chi1.ntfo.org. 3600 SOA ntfo.org. postmaster.ntfo.org. 2026020901 3600 14400 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0