filtering out spam question

[phillyTIM]

my new exchange 2003 server is behind a firewall.

i want to setup the automatic "connection filter" to auto-filter out e-mail from the blacklist orgs. but i can't use this because exchange is behind the firewall, and there is not authentication means for the proxy server.

so men next choice is to either MANUALLY type in exclusions for the bad domains, OR -

is there a way to import a blacklist into exchange 2003 server from a file from one of those blacklist orgs?

or is there some other way to help prevent spam from getting into users mailboxes?

 

[phillyTIM]

my tough questions never get any response :/

wonder where a decent place for them are

 

[johnny99]

I don't know the answer to your problem with the import of a blacklist.
What we are looking into is to use GFI for antispam filtering. Another product could be Antigen from Sybari. There is a lot of products that can help you.

In general I think that maintaining a blacklist manualy is hopeless and remember that most spammers often use hotmail.com and yahoo.com sender addresses and most installations don't want to block emails from a domain like hotmail.com and yahoo.com