[TheMilkCarton]

Well, this mod seems pretty dead, and I doubt the dev would add this to the actual product, but I thought it was important to show the IP.

Change register_addmember_process to:

PHP Code:

$vbulletin->input->clean_array_gpc('p', array(
    'isbot_time1' => TYPE_UINT
));

if ($vbulletin->GPC['username'] && $vbulletin->GPC['email'])
{
    $isbot_time1 = $vbulletin->GPC['isbot_time1'];
    $isbot_time2 = TIMENOW;
    $isbot_timediff = intval($isbot_time2 - $isbot_time1);

    if ($isbot_timediff <= 15) // difference in seconds
    {
        $isbot_username = htmlspecialchars_uni($vbulletin->GPC['username']);
        $isbot_email = htmlspecialchars_uni($vbulletin->GPC['email']);

        $isbot_subject = $vbphrase['isbot_user_blocked_from_registering'];
        $isbot_message = $vbphrase['isbot_the_following_name_email_blocked']
            . ': ' . $isbot_username . ' - ' . $isbot_email
            . ' (' . $isbot_timediff . ' ' . $vbphrase['isbot_seconds_transpired'] . ')';
        $isbot_message .= "\n\r\n\rAttempt was made from: ". IPADDRESS ."";

        vbmail($vbulletin->options['webmasteremail'], $isbot_subject, $isbot_message, true);

        eval(standard_error(fetch_error('noregister')));
    }
} 


I think it helps decide whether or not I should just give in and ban a certain IP range.. my forum isn't exactly international so it really doesn't matter to me. I also think the IP in combination with the other things in the email will help you decide if it's a bot or if it's legit, since the problem I described in the post above can possibly lead to a lot of false positives.