Killing That Spam With Postgrey And Postfix (HowtoForge)

Killing That Spam With Postgrey And Postfix (HowtoForge)

Posted Jul 3, 2006 19:19 UTC (Mon) by zappy (guest, #38793)
In reply to: Killing That Spam With Postgrey And Postfix (HowtoForge) by copsewood
Parent article: Killing That Spam With Postgrey And Postfix (HowtoForge)

Greylisting has in my experience lessened the spam with somewhere around 95-99% compared to no greylisting.. This is where NO other antispam features are used except blacklisting in combination with greylisting..
Since it's not based on content snooping, it's basically impervious to new techniques except just to resend over and over again, which is very costly if you are trying to send out 10milllion+ emails. Only way to spam properly then is to go back to spamming through proper email servers and only use verified addresses, which will lessen the total amount of spam as most of those have a n account limit for sending mails per hour/day/week etc.
We will never be totally free of spam, but bulk spamming is a dying business in email with greylisting.. Today web/blog/chat spammers are the big annoyance..

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