Is somebody using IP Blocklist servers to prevent junk in SBS2011/Exchange 2010?
- What are the experiences?
- Would you recommend doing it?
- Are there any tools to check if it's working correctly when configured in Exchange 2010?
BTW: I have a small user base, 5 users. This would result in less than 1000 bl-queries per day, so I could go for example the free, public service of spamhaus.org zen.spamhaus.org.
Henry