dizasta writes: > ok thanks. why is it a security flaw btw?
If I send you an HTML mail, with a link to an external image, I'll know: 1) When you've read my mail, 2) What mail software you're using to read my mail, 3) Your IP address 4) The fact that your E-mail address is valid, and represents a deliverable mailbox. Additionally, #2 may provide additional information that might be helpful in exploiting any known security holes in your mail software.
