Ken5050,
A server is a piece of hardware. If you are handling a LARGE email service or webpages, you may have 2,3 5, 10 maybe 20 machines all linked together physically.
But the outside world would essentially see 1 piece of hardware. That is the IP Address.
For a hacker, this would be like striking oil in a gold mine.
In any sane universe, the fact that the Clinton Foundation and Clintonemail.com shared the same IP address would be DEVESTATING news to Hillary Clinton. There is NO WAY IN THE WORLD that anyone wanting to stay out of prison would have approved this setup.
That's what I thought..but the sentence above makes it sound like something different. Is it just bad writing and lousy editing?
Means that they were routed through one IP. Means nothing about the servers behind that IP. It also does not mean that the email or web or any other servers were all running in the same OS although that could be true. For example domains in dreamhost all run on the same server so could be your "hacker gold mine" scenario. But domains on many other hosting services give you one IPV4 with some number of servers depending on what you want to spend. That is now, and back in the day IPV4 addresses cost more per month and there were several ways to have different domains on different (hardware) servers behind one IP address.