postfixadmin/DOCUMENTS/SECURITY.txt

Security and PostfixAdmin
-------------------------

While the developers of PostfixAdmin believe the software to be 
secure, there is no guarantee that it will continue to do be so
in the future - especially as new types of exploit are discovered.
(After all, this software is without warranty!)

In the event you do discover a vulnerability in this software,
please report it to the development mailing list, or contact 
one of the developers directly.




DATABASE USER SECURITY
----------------------

You may wish to consider the following :

 1. Postfix only requires READ access to the database tables.
 2. The virtual vacation support (if used) only needs to WRITE to 
    the vacation_notification table (and read alias and vacation).
 3. PostfixAdmin itself needs to be able to READ and WRITE to 
    all the tables.
 4. PostfixAdmin's setup.php additionally needs permissions to CREATE
    and ALTER tables in the PostfixAdmin database. For PostgreSQL, also
	permissions for CREATE FUNCTION and CREATE TRIGGER are needed.
	In other words: setup.php needs all permissions on the PostfixAdmin
	database.

Using the above, you can improve security by creating separate 
database user accounts for each of the above roles, and limit 
the permissions available to them as appropriate.


FILE SYSTEM SECURITY
--------------------

PostfixAdmin does not require write support on the underlying 
filesystem with the following exceptions:
- the templates_c directory where Smarty caches the templates
- PHP's session.save_path to store session files