Quote:
Originally Posted by kacir
There is much better system for filtering spam.
It is called greylisting.
It is similar to the system you describe, but it does not bother the sender.
scenario:
mail is sent from YourRandomServer.com to MyServer.com
MyServer.com replies to YourRandomServer.com "I can not accept that mail in this moment, please try again later" (this happens quite often during the normal course of operation, not only if you implement greylisting).
MyServer.com makes a note that YourRandomServer.com has tried to send this particular message.
YourServer is a well behaved, standard compliant server (unlike the VAST majority of spam sending virus infected Windows PCs) so it tries to deliver the mail again.
This time MyServer.com receives the message, and adds YourRandomServer.com on the whitelist so the next time YourRandomServer.com sends a message, the message is received immediately.
I have implemented this on our company server and the spam that "gets through" has decreased to 5% of the original volume. Quick, simple, effective.
|
That sounds interesting. What is the name of the solution that you chose?
Best Wishes,
Eric