You can add post attachments for blog posts, forums, and specific media galleries. You cannot add post attachments to a wiki.

Determine attachment file extensions for blogs

  1. Navigate to Control Panel Dashboard > System Administration > Blog Administration > Configuration > File Storage Settings.
  2. In the Allowed File Extensions area, add the desired file extension.

  3. Click Save.

Determine attachment file extensions for forums

  1. Navigate to Control Panel Dashboard > System Administration > Forum Administration > Configuration > Global Forum Settings > Attachments.
  2. In the Allowed File Extension Types area, add the desired file extension.

  3. Click Save.

  1. Navigate to Control Panel Dashboard > System Administration > Media Gallery Administration > Media Galleries > [select a media gallery].

  2. Click Edit.
  3. Click Options.

  4. By default, any type of file can be uploaded. If you type an entry into Allowed File Extensions, only files of that type will be allowed.
  5. (If you want to restrict one or more file extensions, type it or them into the Restricted File Extension area.)
  6. Click Save.