For IP reverse you need to contact hosting provider and they will tell how to do that usually.
For example this is how to for OVH:
http://help.ovh.com/PersonalisedReverse
For example this is how to for OVH:
http://help.ovh.com/PersonalisedReverse
No support using PM (Auto adding to IGNORE list!), use the forum.
How to ask
200$ free to start your VPS 60 days credit
How to ask
200$ free to start your VPS 60 days credit