I'm trying to block clients from using web based scripts to send mail from *@paypal.com or with the realname of paypal. This is what the post looks like:
 
-----------------------------7d43991d691196
Content-Disposition: form-data; name="from"
 
billing@paypal.com
-----------------------------7d43991d691196
Content-Disposition: form-data; name="realname"
 
paypal
 
Since the name="from" and the billing@paypal.com are not on the same line I'm having a little trouble with this. Can anyone give me a clue as to how this can be done?