_dmarc.ipxgate.com has no MX records.
Question and response
Question
dig _dmarc.ipxgate.com. MX
Answer
The response has no answer records.
Authority
ipxgate.com. 38400 SOA ns01.ipxgate.com. ikonomidis.gmail.com. 1305185602 10800 3600 1209600 38400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0