I saw the other posts about the 403 error and bb blocking you because someone complained about you spamming them. And I saw the solutions others had. This happened all of a sudden today when I wanted to create a post.
I apologize to the plugin author as I emailed him after I thought I followed all the steps to resolve. After scanning my computer for viruses using 3 or 4 programs, I choose another that did detect some infected files. I cleaned them up but still could not login. So, my solution was to delete the bad behavior plugin. That solved both of my blog problems as well as another person who uses the same host.
I would really like to know what caused this problem being a technical support person by trade. Since my blog is not frequented by a lot of people and since practically no one comments, I now made my blog a private one. Hopefully now it won't generate any email spam to anyone.