Mailing list server with PHP frontend

Hi! I want to know if anyone knows about a good mailing list manager that has got a PHP administration frontend I've found many PHP scripts for sending newsletters and announcementes, but that's it's not what I want I want a system like Mailman, Sympa or Majordomo (the mailing list server may be programmed in Perl or whatever), but it must provide a PHP frontend for administration, subscription, etc It would be great if messages are stored in a database like MySQL and it must be free software Does this exist?? Thanks in advanced, Juan