[imp] Help! spam killing our organization

[Richard Zuidhof]

yeats at rosemontschool.org wrote:
> Our imp program is not blocking spam. Now i am an imp novice, but some of the
> technology people here said that "blacklist" button was supposed to filter out
> unwanted emails. Any ideas?

To filter real spam you will need to block it at the mail server it 
arrives on or use a program like Spamassassin in combination with IMP 
(if that is possible).

I can advise you to use some DNS blacklists on your mail server 
(rosemontschool.org [209.158.100.18]). These lists let your mail server 
refuse mail from spam sources.

These are good ones to start with:
bl.spamcop.net
sbl-xbl.spamhaus.org
list.dsbl.org

See http://www.farrokhi.net/blog/archives/000068.html on how to add 
these to Postfix.

Richard