Can you apply robots.txt to the server

[NewComputer]

or do they have to be applied within each website? I don't want certain spiders eating any of my bandwidth. Please advise.

[digitalpoint]

It's per site (not per server), no way to get around that.

[vagrant]

I don't want certain spiders eating any of my bandwidth. Please advise.
if it is a case of not wanting them on any part of any of the sites at all, then you could possibly ban the spiders, via their ip, from the server

[misohoni]

There's an amazing thread on robots and how to use them somewhere on this site.