Hello,

you have 2 options
I will assume the IP with hosted-by.ecatel.net PTR is VPS node and you have full control over it.
1 - you can request PTR change from hosted-by.ecatel.net to hosted.by.you
2 - you can disable icmp protocol via iptables. in main node execute :
iptables -A OUTPUT -p icmp -j DROP
iptables -A INPUT -p icmp -j DROP

second option will disable both traceroute and ping options.

and if you don't have control over that IP then do what Ecatel suggested.

Highest Regards
Mohammed H