Email

MX Lookup Address Verification

Type:	code fragment
Added by:	PHPGalaxy
Entered:	24/01/2002
Last modified:	01/12/2001
Rating:	(3 votes)
Views:	8122

If you have the system resources, this's the only verification snippet you'll need. This performs an MX lookup on the domain of the email address to verify that it *can* receive mail. (Note: This code did not work on the Windows ISAPI version of PHP, and may not work under Windows at all).

<?php
#This is just an example, you'll have to figure

                            #out how to implement it into your own code :)

                            
 $email = "tim@phpgalaxy.com"

                            $domain = substr(strstr($email, '@'), 1);
 $x = getmxrr($domain, $mxs);

                            
 #$mxs[0] will return the first (or only) MX record

                            #of the domain. If $mxs[0] has a value, the email

                            #address is good, if $mxs[0] comes up empty, the

                            #domain has no MX record(s) and cannot receive mail.

                            
 ?>

Usage Example

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