Milter-greylist

Pim Zandbergen <P.Zandbergen@...> wrote:

> Spammers seem to prefer secondary mailservers
> over primary ones; using milter-greylist on a
> secondary MX only catches a lot of spam, without
> bothering any legitimate mail.

Last time I heard about that, I was given the following reason: 

regular mail prefer the primary MX, whereas spamware sends to any MX,
regardless of the priority. This leads to ham/spam ratio being lower on
secondary MX than on primary MX. But that does not mean spammers prefer
secondary MX. 

Has this changed over the time? What's the purpose of targetting the
secondary MX?

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu@...