I’m trying to make one of my other blogs more multi-author friendly. So one of my contributors wrote a post and sent it to the wordpress email account. My cron job picked up the email on schedule. Unfortunately, the wp-mail function did not assign the author correctly (even though the email came from the registered contributor’s email address) and did not return the content of the email. Just the subject line (see this Trac ticket). The email got assigned to the admin account so it was duly posted and pumped out with my feed until I checked things the following day.
Nothing like an empty post in your blog (and your feed) to get your morning started. I’ve disabled the cron job rather than going through the wp-mail.php code to troubleshoot it.