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? John Hornbuckle MIS Department Taylor County School District 318 North Clark Street Perry, FL 32347 www.taylor.k12.fl.us ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
