Over at AllSpammedUp.com I’ve written an article on the Exchange 2007 Connection Filter agent, and I walk through the steps to configure it to use SpamHaus as an IP Block list provider.
A correctly configured Connection Filter agent saves the Exchange administrator a lot of time by avoiding the need to manually maintain a large list of blocked and allowed IP addresses. The Connection Filter agent also reduces server load by rejecting likely spam before it has been transmitted to the Exchange server and without requiring resource-intensive content scanning of the email message.
Read the full article here.
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Great thanks for the article. We have been in need of filtering for a long time after users reported spam e-mails coming from themselves.