>azurIt wrote: > >> I don't believe in rejecting e-mails based on spam checks - there are and >> always be false positives. I will rather accept 100 spams than reject single >> legitimate e-mail message. > >Spam volume these days is such that accepting, processing, and storing >**all** mail is becoming more and more unworkable, especially with a >situation like you're asking about where that stream of garbage is >forwarded out of your system to a system that *does* reject some volume >of spam (or blocks your system outright if you send them too much spam). > >Depending on how you count, we reject anywhere from 50% to 90% of our >total mail volume based on a Spamhaus lookup. Aside from an incident >where a Postini netblock got listed for a little while, I don't think I >recall *any* false positives over several years. > >To more directly answer your original question, it would help if you >posted an overview of your mail flow. It sounds like your forwarding is >done via alias rather than .forward or some similar processing on final >local delivery; choosing a different place for your forwarding may help >cut the volume of forwarded spam.
Thank you for a first post which tries to answer my original question. I'm doing forwards with 'virtual_alias_maps'. I will be, probably, able to implement all forwarding features of postfix with, for example, maildrop but it will be really lots of work. But it's a good idea anyway, thanks. azur
