The Basic Antispam Plugin provides basic antispam features like: allow anonymous comments, detect feedback duplicates, feedback sensitivity to links, apply rel="nofollow", block spam referers, check referers for URL and check trackbacks for our URL.
|Last tested in version:|
Allow anonymous comments
Allow non-registered visitors to leave comments.
Detect feedback duplicates
If you enabled this, feedback (comments and trackbacks) gets checked for duplicate content on the same item from the same author (either identified as member or by name, email or URL).
Feedback sensitivity to links
If a comment has more than the given number of permitted links, it will get 100% Spam karma.
If this feature is not disabled (by using -1), it will return a value between 0 and 100. E.g., if you set it to 2 and a comment contains one link, it will return 50% spam karma.
Google suggested to put a
rel="nofollow" tag on comment links, so they can ignore the PageRank with those. Because it does not stop comment spam and harms the blogosphere (opinions differ here) you can enable (-1), disable (0) or use it for X hours on a comment (X).
Block spam referers
If a referrer gets detected as being a spam URL, the default behaviour has been to create a "403 Forbidden" page and cancel script execution. If you do not want to cancel script execution, you can turn it off here. Requests to the admin area (backoffice) do not get blocked anymore (this has changed with version 1.8).
Check referers for URL
This will search the requested (your) URL in the content of the referring page.
This is against referer spam, but creates additional webserver traffic, because your server has to fetch the URL that’s given in the Referer.
The event is disabled by default.
Check Trackbacks for our URL
This will search your domain in the contents of the page that is given as the trackback’s URL (where you will link to).
This is against trackback spam, but creates additional webserver traffic, because your server has to fetch the URL that’s given with the trackback.
The event is enabled by default.
(This feature has been removed in 1.9.x. It was unreliable and is against the trackback specs anyway. This is what pingbacks are for.)
Per User Group Settings
In b2evo v7, the plugin also allows to set the minimum comment interval per User Group.
The Basic Antispam Plugin gets shipped with b2evolution and can be found in