[exim] $h_from or $sender_addres

Hi,

I am in the process of adding some condtions to prevent from address
spoofing. But now I am confused on weather to use $h_from or
$sender_address .

Which one should I use? Please help

--
Regards,
Soumya

<http://poornam.com>
"I like the dreams of the future better than the history of the past."