Periodik Labs

Actually, I'm not sure "require" is the right word — it looks like Hotmail will start using the lack of a Sender ID tag to score email as spam. The Hotmail spam filters take a number of things into account when determining whether a message is spam, and come November, not using Sender ID will be one.

I hate spam as much as the next guy, but this is bad news for Hotmail users. Only a small percentage of email systems use Sender ID thanks to a variety of issues. Cynics will argue that Microsoft is using their millions of Hotmail users as leverage to increase adoption of their flawed protocol (and they'd be right). What we really need is email system vendors to work together to solve the problem rather than trying to run each other's products into the ground.