Backup MX 
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I Site synopsis

General page:
- main page
  - introduction and purposes
  - examples
- compagny
  - why
  - host configuration
- legal

User interface:
- register
  - name and firstname
  - postal address
  - email
  - email domain to backup
  - password
- login
  - login
  - retrieve password by email
  - retrieve password by postal mail
- account
  - name and firstname
  - postal address
  - email
  - password
- configuration
  - domain to backup
  - validity date
  - renew
  - delete
- statistics
  - view per domain
  - graph plotting of bandwidth usage during last 7 days
  - graph plotting of bandwidth usage during 12 last moths
  - curves
    - number of resend emails
    - number of resend mega-bytes

Administration
- statistics
  - view per domain
  - general view
  - graph plotting of bandwidth usage during 12 last moths
- data base
  - login, name, firstname, email, postal address

Actions
- create account
- retrieve password by email
- update domain backup setting
- delete domain
- update user settings
- update domain validity (via paypal?)

Cron
- statistics
- check domain validity, unconfigure domain backup

II Database

Table users
- uid (user id)
- login
- gender
- name
- firstname
- email
- postal address

Table hosts
- hid (host id)
- domain
- validity
- owner (users.uid)

Table of weekly statistics
- mid (mail id)
- date
- time
- size
- host (hosts.hid)

Table of monthly statictis
- sid (stat id)
- year
- month
- day
- nb_emails
- nb_bytes
- host (hosts.hid)