Blacklists a Sledge Hammer approach
I've been pondering for a while about the issue with blacklists. Some email providers are using stupid blacklists which block whole IP blocks just because there is one bad egg on the range. Then you get the guys who still use deprecated blacklists which are no longer being run which return false positives for every email they receive and wonder why they are not delivering any email! It's like using a sledge hammer to hit a small nail into the dry wall and you end up making a big hole into the next room.
Maybe it's actually time to reconsider how everyone is doing email blocking to reduce SPAM? Hotmail's approach is quite shocking. They just discard emails after accepting them. Yahoo! just places it in the junk mail folder.
Maybe one needs to start campaigns like 'Friends don't let friends use Yahoo! Mail'.
