diff --git a/doc/getting_started/configuration.rst b/doc/getting_started/configuration.rst
index c56271a05..d7050cc34 100644
--- a/doc/getting_started/configuration.rst
+++ b/doc/getting_started/configuration.rst
@@ -66,6 +66,14 @@ The *admin* application exposes several parameters, they are presented below:
 |                    |is specified        |                    |
 +--------------------+--------------------+--------------------+
 
+.. note::
+
+   If you are not familiar with virtual domain hosting, you should
+   take a look at `postfix's documentation
+   <http://www.postfix.org/VIRTUAL_README.html>`_. This `How to
+   <https://help.ubuntu.com/community/PostfixVirtualMailBoxClamSmtpHowto>`_
+   also contains useful information.
+
 .. note::
 
    A random secret key will be generated each time the *Parameters*
@@ -297,6 +305,9 @@ online panel.
 To use it, you can setup a cron job to run every night::
 
   0 0 * * * <modoboa_site>/manage.py cleanlogs
+  #
+  # Or like this if you use a virtual environment:
+  # 0 0 * * * <virtualenv path/bin/python> <modoboa_site>/manage.py cleanlogs
 
 Cleaning the session table
 ==========================
@@ -311,3 +322,6 @@ cleanup``. That script deletes any session in the session table whose
 For example, you could setup a cron job to run this script every night::
 
   0 0 * * * <modoboa_site>/manage.py cleanup
+  #
+  # Or like this if you use a virtual environment:
+  # 0 0 * * * <virtualenv path/bin/python> <modoboa_site>/manage.py cleanup
diff --git a/doc/getting_started/install.rst b/doc/getting_started/install.rst
index 8a5afff43..0d7c6bce6 100644
--- a/doc/getting_started/install.rst
+++ b/doc/getting_started/install.rst
@@ -155,8 +155,9 @@ server::
 
 You should be able to access Modoboa at http://localhost:8000/.
 
-For a fully working interface using the embedded HTTP server, you need to set the ``DEBUG``
-parameter in settings.py to ``True``.
+For a fully working interface using the embedded HTTP server, you need
+to set the ``DEBUG`` parameter in settings.py to ``True``.
 
 For a production environment, we recommend using a stable webserver
-like :ref:`apache2` or :ref:`nginx-label`. Don't forget to set ``DEBUG`` back to ``False``.
+like :ref:`apache2` or :ref:`nginx-label`. Don't forget to set
+``DEBUG`` back to ``False``.
diff --git a/doc/getting_started/plugins.rst b/doc/getting_started/plugins.rst
index 61556029e..9a395055c 100644
--- a/doc/getting_started/plugins.rst
+++ b/doc/getting_started/plugins.rst
@@ -140,6 +140,9 @@ purge the quarantine database. To use it, add the following line
 inside root's crontab::
 
   0 0 * * * <modoboa_site>/manage.py qcleanup
+  #
+  # Or like this if you use a virtual environment:
+  # 0 0 * * * <virtualenv path/bin/python> <modoboa_site>/manage.py qcleanup
 
 Replace ``modoboa_site`` with the path of your Modoboa instance.
 
@@ -206,6 +209,9 @@ administrators or domain administrators. To use it, add the following
 example line to root's crontab::
 
   0 12 * * * <modoboa_site>/manage.py amnotify --baseurl='<modoboa_url>'
+  #
+  # Or like this if you use a virtual environment:
+  # 0 12 * * * <virtualenv path/bin/python> <modoboa_site>/manage.py amnotify --baseurl='<modoboa_url>'
 
 You are free to change the frequency.
 
@@ -279,7 +285,7 @@ files (see `rrdtool <http://oss.oetiker.ch/rrdtool/>`_) and then
 generates graphics in PNG format.
 
 To use it, go to the online parameters panel and adapt the following
-ones to your environnement:
+ones to your environment:
 
 +--------------------+--------------------+--------------------------+
 |Name                |Description         |Default value             |
@@ -307,6 +313,9 @@ To finish, you need to collect information periodically in order to
 feed the RRD files. Add the following line into root's crontab::
 
   */5 * * * * <modoboa_site>/manage.py logparser &> /dev/null
+  #
+  # Or like this if you use a virtual environment:
+  # 0/5 * * * * <virtualenv path/bin/python> <modoboa_site>/manage.py logparser &> /dev/null
 
 Replace ``<modoboa_site>`` with the path of your Modoboa instance.
 
diff --git a/doc/getting_started/upgrade.rst b/doc/getting_started/upgrade.rst
index fde360a62..fb1643141 100644
--- a/doc/getting_started/upgrade.rst
+++ b/doc/getting_started/upgrade.rst
@@ -560,7 +560,7 @@ requires a migration.
 
      $ python manage.py migrate admin
 
-#. Update SQL queries used in your environnement (see
+#. Update SQL queries used in your environment (see
    :ref:`postfix` or :ref:`dovecot`).
 
 #. Update Postfix configuration so that it can handle domain aliases