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I am using mail function in php, how to track or find the IP address of email sender. here is my code.

mail($to,$subject,$message);

all parameter came from view page using $_POST.

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    Umm append $_SERVER["REMOTE_ADDR"] to your $message? Commented Jan 30, 2014 at 7:33

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Check this answer https://stackoverflow.com/a/3358212/829533

Make a function in php

function getUserIpAddr() { if (!empty($_SERVER['HTTP_CLIENT_IP'])) //if from shared { return $_SERVER['HTTP_CLIENT_IP']; } else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //if from a proxy { return $_SERVER['HTTP_X_FORWARDED_FOR']; } else { return $_SERVER['REMOTE_ADDR']; } }

and add ip address to the email 

$message = "IP Address: " . getUserIpAddr(); mail($to,$subject,$message);
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you help hacker spoof ip easily by sening fake HTTP_X_FORWARDED_FOR, its better log all this ips