Kai Schaetzl napsal(a): > Erick Perez wrote on Thu, 23 Aug 2007 21:52:20 -0500: > >> 5 million emails a day > > so, 4 million of that are spam? The ressources you need depend very much > on how you deal with spam. If you take good measures at MTA level the > system backend with SA etc. has only to deal with 1 million, otherwise it > has to deal with five times of that. Quite a difference. > > Kai > Some hints: - if there are 4 Mil of spam consider greylisting, http://postgrey.schweikert.ch/ helps a lot SA - use local DNS cache David Hrbáč