mail.erotrend.nl has no MX records.
Question and response
Question
dig mail.erotrend.nl. MX
Answer
The response has no answer records.
Authority
erotrend.nl. 300 SOA ns1.ek-hosting.net. hostmaster.erotrend.nl. 2026021200 300 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0