/wp-content/plugins/
directory.The blocking function is implemented by JavaScript(AJAX) and invisible 2 input field.
The first input-field is input token-code by JavaScript.When "post comment" button was pushed, AJAX goes to have token-code. This fields is hidden by JavaScript. The spam-bots can not set valid token-code. - the comment will be blocked because it is spam-bots.
The second input-field is honey pot fields.this fields is hidden by css-define. This field is hidden for the user and user will not input to it.so it's empty everytime. But spam-bots is tricked, and something is input - the comment will be rejected because it is spam-bots.
When you choose 'Comments' in the admin menu, it's shown report. it is displayed count of blocked. and show the rejected post-data.(The latest 10 case)
The log data are max 10 records.It's overwritten from old data.
The trackbacks are blocked everytime. You may enable trackbacks if you use it. Edit the sz-comment-filter.php file and find "$szmcf_settings" and "allow_trackbacks" of elements change to "true".
User can post comment without JavaScript.when must be enter token-code manualy.