Sorry, I don't have an answer for you. Try searching hotscripts.com or google.com for a php script that does this.
Here's one way to ensure users provide a valid email address during registration.
Open includes/functions.php
Replace:
function check_email($email) {
return (preg_match('/^[-!#$%&\'*+\\.\/0-9=?A-Z^_`{|}~]+@([-0-9A-Z]+\.)+([0-9A-Z]){2,4}$/i', $email)) ? 1 : 0;
}
with this:
function check_email($email) {
return(!MailChek($email, 2));
}
function MailChek($Addr, $Level, $Timeout = 15000) {
// Valid Top-Level Domains
$gTLDs = "com:net:org:edu:gov:mil:int:arpa:aero:biz:coop:info:museum:name:";
$CCs = "ad:ae:af:ag:ai:al:am:an:ao:aq:ar:as:at:au:aw:az:ba:bb:bd:be:bf:".
"bg:bh:bi:bj:bm:bn:bo:br:bs:bt:bv:bw:by:bz:ca:cc:cf:cd:cg:ch:ci:".
"ck:cl:cm:cn:co:cr:cs:cu:cv:cx:cy:cz:de:dj:dk:dm:do:dz:ec:ee:eg:".
"eh:er:es:et:fi:fj:fk:fm:fo:fr:fx:ga:gb:gd:ge:gf:gh:gi:gl:gm:gn:".
"gp:gq:gr:gs:gt:gu:gw:gy:hk:hm:hn:hr:ht:hu:id:ie:il:in:io:iq:ir:".
"is:it:jm:jo:jp:ke:kg:kh:ki:km:kn:kp:kr:kw:ky:kz:la:lb:lc:li:lk:".
"lr:ls:lt:lu:lv:ly:ma:mc:md:mg:mh:mk:ml:mm:mn:mo:mp:mq:mr:ms:mt:".
"mu:mv:mw:mx:my:mz:na:nc:ne:nf:ng:ni:nl:no:np:nr:nt:nu:nz:om:pa:".
"pe:pf:pg:ph:pk:pl:pm:pn:pr:pt:pw:py:qa:re:ro:ru:rw:sa:sb:sc:sd:".
"se:sg:sh:si:sj:sk:sl:sm:sn:so:sr:st:su:sv:sy:sz:tc:td:tf:tg:th:".
"tj:tk:tm:tn:to:tp:tr:tt:tv:tw:tz:ua:ug:uk:um:us:uy:uz:va:vc:ve:".
"vg:vi:vn:vu:wf:ws:ye:yt:yu:za:zm:zr:zw:";
// The countries can have their own 'TLDs', e.g. mydomain.com.au
$cTLDs = "com:net:org:edu:gov:mil:co:ne:or:ed:go:mi:aero:biz:coop:info:museum:name:";
$fail = 0;
// Shift the address to lowercase to simplify checking and trim
$Addr = trim(strtolower($Addr));
// Check for spaces
if (ereg(" ", $Addr)) $fail = 1;
// Split the Address into user and domain parts
$UD = explode("@", $Addr);
if (sizeof($UD) != 2 || !$UD[0]) $fail = 1;
// Split the domain part into its Levels
$Levels = explode(".", $UD[1]); $sLevels = sizeof($Levels);
if (!$Levels[0] || !$Levels[1]) $fail = 1;
// Get the TLD, strip off trailing ] } ) > and check the length
$tld = $Levels[$sLevels-1];
$tld = ereg_replace("[>)}]$|]$", "", $tld);
if (strlen($tld) < 2
|| (strlen($tld) > 3 && !ereg(":$tld:", ":arpa:aero:coop:info:museum:name:"))) $fail = 1;
$Level--;
// If the string after the last dot isn't in the generic TLDs or country codes, it's invalid.
if ($Level && !$fail) {
$Level--;
if (!ereg($tld.":", $gTLDs) && !ereg($tld.":", $CCs)) $fail = 2;
}
// If it's a country code, check for a country TLD; add on the domain name.
if ($Level && !$fail) {
$cd = $sLevels - 2; $domain = $Levels[$cd].".".$tld;
if (ereg($Levels[$cd].":", $cTLDs)) { $cd--; $domain = $Levels[$cd].".".$domain; }
}
// See if there's an MX record for the domain
if ($Level && !$fail) {
$Level--;
if (!getmxrr($domain, $mxhosts, $weight)) $fail = 3;
}
// Attempt to connect to port 25 on an MX host
if ($Level && !$fail) {
$Level--;
while (!$sh && list($nul, $mxhost) = each($mxhosts))
$sh = fsockopen($mxhost, 25);
if (!$sh) $fail=4;
}
// See if anyone answers
if ($Level && !$fail) {
$Level--;
set_socket_blocking($sh, false);
$out = ""; $t = 0;
while ($Timeout-- && !$out)
$out = fgets($sh, 256);
if (!ereg("^220", $out)) $fail = 5;
}
if ($sh) fclose($sh);
return $fail;
}
