149-210-76-113.mobile.ren.cosmote.net has no MX records.
Question and response
Question
dig 149-210-76-113.mobile.ren.cosmote.net. MX
Answer
The response has no answer records.
Authority
mobile.ren.cosmote.net. 900 SOA nyma_grid_dns1.dcn.cosmote.gr. ripe.cosmote.gr. 202308081 10800 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0