Hi Colin
You might want to have a look at HexValidEmail:
http://hexillion.com/hg/HexValidEmail/I just used it to validate a list of 33,000 addresses, and it worked flawlessly. I've had it for a couple of years now and I've had no problems with it.
As far as building a tool to fight SPAM, you've got some pretty tough contenders out there:
http://www.pcmag.com/article2/0,4149,1046838,00.aspHTH
>Hi
>
>I am trying to build a VFP app which detects and eliminates SPAM. Does anyone know of software which will allow me to validate email addresses?
>
>Thanks
>
>Colin