Ban email domains (Visit this link)
This mod will allow you to prohibit users who have certain domains in their email addresses. The most common use of this is to ban free email domains, requiring users to give their true email address. This mod will also allow you to edit the list of domains within the DBMan script, so you don't have to download the file, edit it and then upload it again. The mod will, however, allow anyone with admin permission to add a user who has a "banned" domain, through the Admin page.
Submitted by: firstname.lastname@example.org
Added: Tue Jun 20 2000
Last Modified: Tue May 20 2003