[xwiki-users] How to generate the validation email

Hi ,all We are using xwiki-enterprise-1.6 which have the option to send the validation email to the person who registers new. But when I login with the created ID it is giving me an error message 'Your account is not yet active, because your email has not yet been confirmed'. Do you have an idea on how to confirm the email sent while registration ? Some people said that the email sent by XWiki is supposed to contain a link, on which the user is supposed to click on. So ,how to set the configuration to generate this email? Thanks .