Spam module (4.6.x)

The spam module is a powerful collection of tools designed to help website administrators to automatically deal with spam. Spam is any content that is posted to a website that is unrelated to the subject at hand, usually in the form of advertising and links back to the spammer's own website. This module can automatically detect spam, instantly unpublish it, and send notification to the site administrator.

• Automatically detects and unpublishes spam comments and other spam content.
• Automatically learns to detect spam in any language using Bayesian logic.
• Automatically learns and blocks spammer URLs.
• Automatically blacklists IPs of learned spammers, preventing them from
  posting additional spam and wasting database resources.
• Detects repeated postings of the same identical content.
• Detects content containing too many links, or the same link over and over.
• Supports the creation of custom filters using powerful regular expressions.
• Can notify the user that his or her content was determined to be spam,
  preventing confusion over why their content doesn't show up.
• Can notify the site administrator in an email when spam is detected.
• Provides simple administrative interfaces for reviewing spam content.
• Provides comprehensive logging to offer an understanding as to how and why
  content is determined to be or not to be spam.

You can:

• setup spam module permissions at administer >> access control >> permissions.
• configure filter, limits, actions, and advanced configuration at administer >> settings >> spam.
• view spam logs at administer >> spam >> logs.
• administer update options for comment spam at administer >> spam >> comments.
• administer update options for content spam at administer >> spam >> content.
• define custom filters at administer >> spam >> custom filters.
• define URL filters at administer >> spam >> URL filters.
• file issues, read about known bugs, and download the latest version on the SPAM project page.