Ideas on Fairly simple Spam reject at SMTP gateway?

[Scot L. Harris]

On Wed, 2005-04-27 at 22:53, Neal Rhodes wrote:

> Sorry for the confusion.  What I am looking for is an SMTP gateway with 
> features to avoid getting some of the spam in the first place, such as 
> time delay within the SMTP protocol, reverse DNS lookups, header analysis, 
> refusal to relay, and other tricks which discourage spam delivery.   As I 
> understood it, Spamassassin works after the mail is received, and marks 
> suspect email for deletion, and takes a fair amount of tinkering and updating
> to stay functional. 

greylisting is very simple and very effective and can be applied with
any of the MTAs currently available.

One site I worked on was receiving between 5000 and 8000 spam a day. 
After implementing greylisting only 5 to 10 spam a day came into the
system which spamassassin took care of.

-- 
Scot L. Harris
webid at cfl.rr.com

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