> -----Original Message----- > From: John Hornbuckle [mailto:[EMAIL PROTECTED] > Subject: Exchange 2007 IP Block List > > After several months of using Exchange 2007, I just became aware of the > fact that IP addresses are automatically added to the IP Block List. > Shame on me, I guess; I never realized that happened. This morning I > got a call from a sysadmin for an organization that was unable to send > mail to one of my users, and in troubleshooting I found them on the > block list along with a bunch of other addresses that I never added. > > I'm digging around, though, and am coming up short on info about how, > exactly, this happens. Under what circumstances does an IP get > automatically added to that list? I notice that the automatically-added > addresses have expiration dates/times. How long is an address blocked > for that's put on the list automatically? Is that configurable?
William Lefkovics', et al in The Complete Reference Microsoft Exchange Server 2007, page 540: Note: In addition to the manually entered IP addresses or ranges, IP Block Lists also get populated dynamically by the Sender Reputation filter... Webster ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
