Marc Perkel wrote:
> Basically most all good email servers are polite and do the quit. Most 
> all spam bot server don't want to expend the time and bandwidth to be 
> polite and that can be used in combination with other indicators to 
> catch spam.
> 
> The new 4.68 Exim is a major advancement with the notquit ACL and the 
> noupdate feature on the ratelimit.

And don't forget the drop feature.... which results in a lack of QUIT...

- Jeremy


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