dns.ote.gr has no MX records.
Question and response
Question
dig dns.ote.gr. MX
Answer
The response has no answer records.
Authority
ote.gr. 86400 SOA dns.ote.gr. root.dns.ote.gr. 2026021701 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0