Exchange 2007 automatically adding IP to block list
- by Tim Anderson
This puzzled me. We have all mail directed to an ISP's spam filter, then delivered to SBS 2008 Exchange. One of the ISP's IP numbers suddenly appeared in the ES2007 block list, set to expire in 24 hours I think, so emails started bouncing.
Quick look through the typically ponderous docs, and I can't see anything that says Exchange will auto-block…