Paper accepted three hours after submission I have submitted a paper to a conference sponsored by IEEE. After 3 hours, i received an email that said


  your paper has been accepted and recommend to present paper. Your paper will be recommended for publication in IEEE Xplore�. The conference date is after 23 days.


Note: I didn’t receive any reviewer comments on my paper. Only 6 points are written which seems to be general for every paper.

Is it really possible that they have reviewed the paper or did they just accept the paper without review?
It's impossible that the paper was reviewed (at least by a human). 3 hours is way too short. Weeks is a much better order of magnitude estimate for the time required to review papers. 

It sounds like you're dealing with a predatory conference. I would approach with care. Check if the conference's scientific committee are actually established researchers in the field, check the keynote speakers to see if other established researchers are intending to attend, check if the conference has been held before and if so, how those conferences went.