Email Headers Verification

This library is created to help determine which email message was really sent by the author from a FROM field and which one was not.

More Info: http://www.codegrape.com/item/email-headers-verification/5304

Verification process separated to a several independent steps:

* DKIM signature verification
* SPF records check
* SMTP user request

Script can be used in your software. It can be included with one line of a code and doesn't have external dependencies.