I've recently installed WordPress 1.5 and all is going well with controlling SPAM other than I seem to be getting a few each day that have an empty name field and an emailfield that just contains the letter "e".
This is happening despite me requiring users to provide a name and email address. The text of the comment itself is completely empty.
I always mark it as spam, just wanted to find out how this gets there -- is there no server-side check for name and valid email? Can't see how it can submit an anonymous comment with an invalid emailaddress and no comments.