Sending a verify link to the registrant to verify is the only way to be sure an email address is valid (at least for a short period of time).
On Mon, Apr 7, 2014 at 4:59 PM, Chris Miller cjm@tryx.org wrote:
*From: *"Walt Daniels" wdlists@gmail.com *To: *support@drupal.org *Sent: *Monday, April 7, 2014 1:55:59 PM
*Subject: *Re: [support] Many false applications for accounts
Yes you can prob mail providers and determine if the email is valid, but they may lie. I believe AOL replies yes to any request, at least they used to.
Hi Folks,
Isn't the traditional way to handle this simply send a link to the registrant's email account? Bogus e-mail; no access.
Chris.