Spam mails from Anita
Some people already said, that a bot called Anita is spamming with the Yahoo E-Mail servers. The message reads:
If you recieve those messages, just disable your E-Mail address being shown on your page and you're good to go. I haven't tested it with other spam mails, but they are also looking the same.
Following E-Mails have been catched on the gist mentioned:
Stay safe people ;)