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 | 
 Posted by Virginner on 09/15/05 01:35 
| Try this... 
| 
| if (!checkdnsrr(array_pop(explode("@",$_POST["email_address"])),"MX")) 
|     { 
|     $message='That email address does not seem to be valid'; 
|     } 
| 
 
Then, again, that won't stop the all injection attacks.  To do that, scan 
all fields for \r and \n and mime instructions.  Do a quick Google for email 
injection... 
 
D.
 
  
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