Spam Attacks

[Alex Broens]

On 2011-09-15 7:28, Eli Wapniarski wrote:
> Hi
>
> I'm using good old fashioned sendmail as my mta.... It has a feature called
> "greet_pause" "Dunnno if qmail or postfix has this feature, but what this does
> is delay sending banners out for a specified amount of time (usually
> configured for between 1 -5 seconds). If a spammer / slammer starts sending
> before the acknowledgement from sendmail, the connection is summarily dropped.

In Postfix it's called postscreen. Pretty efficient indeed.