This is a GPL managesieve server. It uses a plug-in architecture to
support different authentication, homedir lookup, and storage
back-ends. The server ships with the following plug-ins:

Authentication:

    * Dovecot
    * PAM
    * SASL
    * MySQL

Homedir lookup & session initiation:

    * Dovecot
    * /etc/passwd
    * MySQL
    * simple virtual hosting (eg. /var/lib/virtual/username)

Storage:

    * Dovecot

WWW: http://woozle.org/~neale/src/pysieved/