| 1 | Overview of postman's architecture
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| 2 | ==================================
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| 3 |
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| 4 | .. contents::
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| 5 |
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| 6 | Introduction
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| 7 | ------------
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| 8 |
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| 9 | Postman has been designed following a **multi-component structure**. There is
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| 10 | **a daemon** that manage the mailing lists and members information in a storage
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| 11 | backend and there are **different kinds of clients** (currently, three of them)
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| 12 | that **interact with the daemon using a XMLRPC link**.
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| 13 |
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| 14 | This is the scheme of the architecture:
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| 15 |
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| 16 | .. image:: /postman_architecture.png
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| 17 | :alt: Scheme of the architecture behind Postman
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| 18 | :class: open_fancybox
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| 19 |
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| 20 |
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| 21 | .. _overview_postman_daemon:
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| 22 |
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| 23 | Postman daemon
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| 24 | --------------
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| 25 |
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| 26 | The daemon will perform all the operations regarding the management of the
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| 27 | mailing lists and members. The daemon will save information of a given
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| 28 | mailing list to the storage backend, and will read information of already
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| 29 | saved lists from there too.
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| 30 |
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| 31 | It listens for incoming XMLRPC requests on a given tcp port, allowing clients
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| 32 | to add/update/delete data from the backend.
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| 33 |
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| 34 | .. _overview_postman_mta_client:
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| 35 |
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| 36 | MTA client
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| 37 | ----------
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| 38 |
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| 39 | This client is attached to a given MTA, and is called but the MTA itself when
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| 40 | emails for a mailing lists are received. The client performs some checks on the
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| 41 | backend to tell the MTA what it has to do with the incoming emails.
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| 42 |
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| 43 | .. _overview_postman_cli_client:
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| 44 |
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| 45 | CLI client
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| 46 | ----------
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| 47 |
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| 48 | This is a shell-like interface that can be used to add mailing lists to a given
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| 49 | Postman server, edit such mailing lists information, add members, etc.
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| 50 |
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| 51 | .. _overview_postman_web_client:
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| 52 |
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| 53 | Web client
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| 54 | ----------
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| 55 |
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| 56 | This is a small *webapp* that can be used to perform the same management
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| 57 | operations you can achieve using the
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| 58 | :ref:`CLI client<overview_postman_cli_client>`.
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