diff --git a/README.md b/README.md
index 4f12d1f85..b38bdc30b 100644
--- a/README.md
+++ b/README.md
@@ -15,19 +15,9 @@ same level of functionality and still be able to host a complete mail server
 at little cost while running only FOSS, applying the KISS principle and being
 able to fine-tune some details if needed.
 
-General architecture
-====================
 
-The mail infrastructure is based on a standard MTA-LDA pattern :
 
- * Postfix for incoming and outgoing emails ;
- * Rmilter as a filtering interface before delivery (with rspamd and ClamAV) ;
- * Dovecot as a delivery agent and reading (IMAP) server ;
- * Roundcube (or any Webmail) as a user-friendly Web client ;
- * Fetchmail as a client to fetch remote accounts (POP/IMAP) ;
- * Freeposte (Flask application) as an administration interface.
 
-![Architecture](doc/archi.png)
 
 Running a mail server
 =====================
@@ -43,39 +33,3 @@ docker-compose up -d
 
 For a detailed walktrough, see ``INSTALL.md``. Also, see ``MANAGE.md`` for
 details about daily maintenance of your mail server.
-
-Development environment
-=======================
-
-The administration Web interface requires a proper dev environment that can easily be setup using ``virtualenv`` (make sure you are using Python 3) :
-
-```
-cd admin
-virtualenv .
-source bin/activate
-pip install -r requirements.txt
-```
-
-You can then export the path to the development database:
-
-```
-export SQLALCHEMY_DATABASE_URI=sqlite:///path/to/dev.db
-```
-
-And finally run the server with debug enabled:
-
-```
-python manage.py runserver
-```
-
-Philosophy
-==========
-
-The mailserver is designed as a whole, some images are therefore not best
-suited for reuse outside this project. All images should however follow
-Docker best practices and be as generic as possible :
-
- - even if not suited for reuse, they should be simple enough to
-   fit as base images for other projects,
- - interesting settings should be available as environment variables
- - base images should be well-trusted (officiel Alpine or Debian for instance).
diff --git a/doc/archi.png b/doc/archi.png
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diff --git a/doc/archi.xml b/doc/archi.xml
deleted file mode 100644
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+++ /dev/null
@@ -1 +0,0 @@
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