Project: Drupal Version: 4.5.2 Component: user.module Category: feature requests Priority: normal Assigned to: Anonymous Reported by: budda Updated by: budda Status: patch it *may* be more helpful to move the MX record checking in to the common valid_email_address() function instead? This would ensure other modules validating email addresses could gain the same functionality. budda Previous comments: ------------------------------------------------------------------------ February 23, 2005 - 01:26 : budda Working with the user.module of 4.5.2 distribution I amended the user_validate_mail() function to provide additional checking for a new user. This was inspired by the constant bounced emails I was getting each day from new users mistyping their email address. Sorry that the code is not in patch form. The following code should be placed in user.module :- function _user_check_dnsrr($maildomain, $rectype = 'MX') { if(!empty($maildomain)) { if(function_exists('checkdnsrr')) { return checkdnsrr($maildomain, $rectype); } else { exec("nslookup -type=$rectype $maildomain", $result); foreach ($result as $line) { if(eregi("^$maildomain",$line)) { return true; } } return false; } } return false; } function user_validate_mail($mail) { if (!$mail) return t('You must enter an e-mail address.'); list($username, $maildomain) = split("@", $mail); if (!valid_email_address($mail) || !_user_check_dnsrr($maildomain, "MX")) { return t('The e-mail address %mail is not valid.', array('%mail' => "<em>$mail</em>")); } } I have been using the above on http://www.bargainspy.co.uk/user/register without problem for a day now. Another step in the direction of helping users hide their general stupidity! -- View: http://drupal.org/node/17780 Edit: http://drupal.org/project/comments/add/17780