The Postfixadmin SquirrelMail plugin let users change their virtual alias,
vacation status/message and password if you are using the great postfixadmin
tool from http://high5.net/postfixadmin.  This plugin uses the XmlRpc
feature of Postfix Admin v2.3 and later.

WWW: http://squirrelmail-postfixadmin.palepurple.co.uk/