It was blatantly illegal for her to set up and operate that server regardless of what was on it!
.
ABSOLUTELY!
The whole scheme was illegal from start to finish, and one must remember that Strzok and Comey had no interest in fully revealing what she had done.
Yes it was, as soon as she used it for any “official” government business.
If she had just wanted to set up a server to run her email list of bitter, dried up old hags, that would have been legal.