trac : sudo easy_install ​http://svn.edgewall.com/repos/trac/plugins/0.12/spam-filter-captcha/

​http://trac-hacks.org/wiki/RegistrationConfirmationPatch is this already installed . (In

​TracSpamFilter 0.4.1dev-r10318 there is an option EmailVerificationModule?, although does not verify the regstration of the users with email .