You could use MX records if you wanted to. I found this some time ago...
function checkEmail($Email) {
//Do the basic Reg Exp Matching for simple validation
if (eregi("[EMAIL PROTECTED]", $Email)) {
return FALSE;
}
//split the Email Up for Server validation
list($Username, $Domain) = split("@",$Email);
//If you get an mx record then this is a valid email domain
if(getmxrr($Domain, $MXHost)) {
return TRUE;
}
else {
//else use the domain given to try and connect on port 25
//if you can connect then it's a valid domain and that's good enough
if(fsockopen($Domain, 25, $errno, $errstr, 30)) {
return TRUE;
}
else {
return FALSE;
}
}
}
----- Original Message -----
From: "Blake Schroeder" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, December 04, 2003 2:31 AM
Subject: [PHP] validating email address
Whats the best way to validate email address (check for white space,
check for .com, .net.edu etc)
-Blake
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