Lproven writes: "Almost nobody bothers with encrypting their email. It's too much like hard work and few people are equipped to read it anyway. But getting your email server to digitally sign all the messages it sends is perhaps the next best thing. Individual users don't need to do anything, it aids security and it helps to fight spam and phishing. Nothing proprietary, it's all an open standard: DKIM, DomainKeys Identified Mail. Here's how.
Disclaimer: I didn't write this piece, I just edited it. Go read it, help pay my mortgage!"