On 10/23/06 11:56 PM, "Johann Spies" <[EMAIL PROTECTED]> wrote:
> I have not implemented greylisting so far. Maybe it is time to do so. I > am not quite convinced that it is an unmixed blessing. Can somebody > convince me? It is helpful, but you MUST whitelist sensibly. There are at least three classes of things in "sensibly" 1. neighbor ISPs and others that routinely send mail to your users but are not "large and well known". 2. large and well known senders which will pass greylisting anyhow even though spam comes from them (eg hotmail) 3. broken sending servers (there is a nice list available somewhere on the www.greylisting.org site that will serve as a starting point). We have just under 700 entries in our whitelist database table. All that said, the engine sending the image spam (or at least one) passes greylisting, so greylisting won't help with it. (This is likely the beginning of the end of greylisting as a helpful technique.) --John -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
