<ul>
<li>When judging that Akismet is SPAM when the comment is processed</li>
<li>When marking it as SPAM in the comment section of the dashboard</li>
<li>When you make the approval status SPAM when the comment section of the dashboard edits the comment</li>
</ul>
List IP address from the database in case of the above-mentioned, and Deny the IP address. .htaccess is updates.
It changes in the comment block from
BEGIN written by WordPress plugin – Akismet htaccess writer
to
END written by WordPress plugin – Akismet htaccess writer
in the content of the .htaccess file.
After the .htaccess file, it is written in the tail when the block identifier is not found.
***** Please do not do the contact to the author of the Akismet plug-in for this plug-in *****

Akismet htaccess writer

in connection with Akismet, write in a .htaccess file

Hudson Atwell

Use this plugin to automatically detect and remove bbPress replies marked as spam from the database.
This plugin was developed to help improve database optimization.
<h4>About the Plugin</h4>
http://youtu.be/G2AEf5VEGIk

bbPress: Auto Delete Spam Replies

Automatically delete bbPress spam replies older than X days.

Akismet htaccess writer vs bbPress: Auto Delete Spam Replies