If you still have installed vmm 0.3.x you have to proceed this step first:

    * upgrade your vmm installation to version 0.4-r41

If you have installed vmm 0.4/0.4-r41 you have to proceed this steps:

    * stop Postfix and Dovecot

    * backup/dump your database.

    * backup/dump your database!

    * start psql and connect to the appropriate database

      (ex. psql mailsys mailsys vmm -W -h localhost)

    * update the database: \i update_tables_0.4.x-0.5.pgsql

    * GRANT SELECT ON postfix_alias TO postfix;

                                       ^^^^^^^^ <- your Postfix db user

  Dovecot v1.2.x

    -> Are you already using Dovecot v1.2.x?

       * update the database for Dovecot v1.2.x:

         \i update_tables_0.5.x_for_dovecot-1.2.x.pgsql

       * GRANT SELECT ON dovecot_password TO dovecot;

                                             ^^^^^^^^ <- your Dovecot db user

       * When you are using the SQL function »dovecotpassword()« in your

         dovecot-sql.conf, update it also:

         \i update_types_and_functions_0.5.x_for_dovecot-1.2.x.pgsql

       * You have also to adjust the permissions of the set-uid deliver copy:

         chgrp nogroup /usr/local/lib/dovecot/deliver

         chmod u+s,o-rwx /usr/local/lib/dovecot/deliver

    * execute upgrade.sh

    * start Dovecot and Postfix

If you have installed vmm 0.5.x:

    * execute upgrade.sh

    -> Are you already using Dovecot v1.2.x?

       See a few lines above.

else

     * read INSTALL