Re: [exim] Greylisting - how do you implement?

Quoting Derrick:

> I'm just wondering how people are greylisting, I've come across a few
> methods:

It seems that everybody has his own greylist implementation. I'm no
better: http://plonk.de/sw/exim/greylist.txt

> Any drawbacks?

The usual one's: Broken/unorthodox mail servers that do strange things
on 4xx.