[PATCH] docs: Fix note about the required Postfix rights

[Ali Alnubani]

The permissions for the user running the postfix process are
not the ones used for external file or command delivery by default.
The ones defined by default_privs are (in case the aliases(5) file
that is owned by root was being used). A privileged user or the
postfix owner should not be used in this case.

See http://www.postfix.org/postconf.5.html#default_privs and
local(8).

Signed-off-by: Ali Alnubani <alialnu at mellanox.com>
---
 docs/deployment/installation.rst | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/docs/deployment/installation.rst b/docs/deployment/installation.rst
index c086d9a..cd5e102 100644
--- a/docs/deployment/installation.rst
+++ b/docs/deployment/installation.rst
@@ -617,11 +617,11 @@ they can be loaded as seen below:
 
 .. note::
 
-   This assumes your Postfix process is running as the ``nobody`` user.  If
-   this is not correct (use of ``postfix`` user is also common), you should
-   change both the username in the ``createuser`` command above and substitute
-   the username in the ``grant-all-postgres.sql`` script with the appropriate
-   alternative.
+   This assumes that you are using the aliases(5) file that is owned by root,
+   and that Postfix's ``default_privs`` configuration is set as ``nobody``. If
+   this is not the case, you should change both the username in the ``createuser``
+   command above and substitute the username in the ``grant-all-postgres.sql``
+   script with the appropriate alternative.
 
 __ http://www.postfix.org/
 
-- 
2.11.0