Preventing Spam

You can use a variety of best practices to avoid spam in your community.

Community administrators of external communities should develop a strategy for dealing with spam. (Internal communities do not typically experience spam.) The following methods are available as general spam-prevention strategies or to target specific spammers. Choose the method(s) that will work best for your unique community.

General Spam Prevention Methods

Method Description To learn more, see this topic:
New User Registration Moderation Assign a moderator(s) to approve or reject new user registrations. Moderating User Registrations
Captcha for New User Registrations Require that users type in a Captcha image when they register for the community. Configuring User Registration
Email Validation Require that the application send an email to the address a new user provides at registration. The user must then use a link in the email to complete registration. Configuring User Registration
Restrict Email Domains Restrict the domains from which email registrations can be accepted. Set the following parameters in Admin Console: > System > Management > System Properties: registration.domainRestriction.enabled = true registration.domainRestriction.domains = the list of allowed domains, separated by commas registration.domainRestriction.company = your company name
Captcha at User Log In Require that users type in a Captcha image when they log in to the community. Configuring Login Security
View-only Guest Users Disable the ability of guests to create content by limiting the permissions of "Everyone" to view-only (guests are members of "Everyone"). You would give only Registered Users the ability to create content. Managing Permissions
Askimet for Blog Comments Use Askimet to help prevent blog comment spam. Configuring Blogs System-Wide
Keyword and/or Message Governor Interceptors Limit the frequency of posts and search for spam keywords. Configuring Interceptors
Content Moderation Enable content moderation so that users must submit content for approval before it's published in the community. Moderating Content

Targeting Specific Spammers

Method Description To learn more, see this topic:
Ban Users Ban malicious users by blocking their login credentials or their IP address. Banning People
Ban IP Addresses Ban one or more or a range of IP addresses. Banning People