[EMAIL PROTECTED] wrote:
> Hmmm.  Took me 5 seconds to see this problem.  Did anyone ever apply
> this "theory" to the real worlds?
> 
> Or do I live in a completely different world?
> 

You see a problem where there should be none. The vendor should already be
in the database. The new customer will be in the database after 1 bounce.
Heck my isp (roadrunner) routinely takes up to 4 hours to deliver email so
the "new customer" probably will never notice the extra delay.

If you are going to impliment this you also need to tie this into a
whitelist MySQL database so that the customer only has to do this once.

IMHO the biggest issue with the proposed system is that spammers will soon
realize that if they just respond to the bounce request, they will
automatically be whitelisted and can then bomb your server with spam that
gets past the filter.

A possible better solution would be to one-bounce all unknown mail and then
whitelist only if someone in your company replys to the message. That way
regular customers will get thru quickly, new customers will receive a slight
delay but will never know it. I would also recomend that you put some
housekeeping on the database to delete addresses that has not been active in
a period of time, say 6 months. Also, you should put in a auto-unlist
feature if mail arrives from a whitelisted address with a spam score over a
threshold to keep spammers from spoofing a whitelisted address.

An additional benefit of the database is that it would be easy to use a web
interface to remote manage the database for manual maintainance. 

Bill



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