==========================
Application Role Reference
==========================

.. table:: Application Overview

    +----------------+-------------+
    | Name           | Description |
    +================+=============+
    | ``ext-fw-out`` |             |
    +----------------+-------------+
    | ``ext-fw-inn`` |             |
    +----------------+-------------+
    | ``int-fw``     |             |
    +----------------+-------------+

.. _kolabd:

``kolabd``
==========

A daemon that listens to changes in LDAP.

.. _guam:

``guam``
========

An intelligent reverse IMAP proxy, that can apply policy rules to payload.

.. _imapm:

``imapm``
=========

The Cyrus IMAP MUPDATE master.

.. _ext-imapf:

``ext-imapf``
=============

An IMAP frontend intended for use by external clients.

.. NOTE::

    External clients may include clients on the Internet, road-warriors and
    clients residing on internal client network segments.

.. _int-imapf:

``int-imapf``
=============

An IMAP frontend intended for use by internal clients.

.. NOTE::

    Internal clients include client applications residing in any of the
    server networks, but may also include clients residing on internal client
    network segments.

.. _imapb:

``imapb``
=========

An IMAP backend.

.. seealso::

    *   :ref:`imapba`
    *   :ref:`imapbb`

.. _imapba:

``imapba``
==========

An IMAP backend annotated as one of a pair of replicated backends.

.. seealso::

    *   :ref:`imapbb`

.. _imapbb:

``imapbb``
==========

An IMAP backend annotated as one of a pair of replicated backends.

.. seealso::

    *   :ref:`imapba`

.. _ldapr:

``ldapr``
=========

An LDAP server intended for read-only operations, also known as a replication
slave.

.. _ldapw:

``ldapw``
=========

An LDAP server intended for write operations, also known as a replication
master.

.. _ext-mx-in:

``ext-mx-in``
=============

An external-facing mail exchanger for inbound message delivery.

.. _ext-mx-out:

``ext-mx-out``
==============

An external-facing mail exchanger for outbound message delivery.

.. _ext-subm:

``ext-subm``
============

An external-facing mail exchanger for message submission by users.

.. _int-subm:

``int-subm``
============

An internal-facing mail exchanger for message submission by client
applications.

.. _int-mx:

``int-mx``
==========

An internal mail exchanger. Routes traffic between systems.

Often also the system relayhost for the entire environment.

Receives inbound messages from external sources from :ref:`ext-mx-in`.

Delivers messages destined for local recipients to the appropriate IMAP
backend server.

Delivers messages destined for external recipients to :ref:`ext-mx-out`.

.. _dbw:

``dbw``
=======

A database service intended for write operations, also known as a replication
master.

.. NOTE::

    In the case of a MariaDB Galera cluster, all participants can be designated
    as :ref:`dbw` servers.

    .. seealso::

        *   :ref:`dbr`

.. _dbr:

``dbr``
=======

A database service intended for read-only operations, also known as a
replication slave.

.. _roundcube:

``roundcube``
=============

The Kolab web client application.

.. _syncroton:

``syncroton``
=============

Serves ActiveSync to Kolab users.

.. _chwala:

``chwala``
==========

Serves the File Cloud to Kolab users.

.. _irony:

``irony``
=========

Serves CalDAV, CardDAV and WebDAV protocol interfaces to Kolab users.

.. _wap:

``wap``
=======

Web Administration Panel for LDAP.

.. _freebusy:

``freebusy``
============

Free/Busy services for Kolab users.

.. _memc-pub:

``memc-pub``
============

Memcached services for public-facing services.

.. _memc-pvt:

``memc-pvt``
============

Memcached services for private-facing services, such as the :ref:`wap` when
HKCCP is used.

.. _asav-in:

``asav-in``
===========

Anti-Spam and Anti-Virus for inbound messages.

.. _asav-int:

``asav-int``
============

Anti-Spam and Anti-Virus for internal messages.

.. _asav-out:

``asav-out``
============

Anti-Spam and Anti-Virus, and DKIM signing for outbound messages.

.. _wallace::

``wallace``
===========

Daemon that applies policies to message traffic. Examples include
`gpg_encrypt`, `resources` and the `invitation_policy`.

``ext-fw-out``
==============

Outer perimeter firewall.

``ext-fw-inn``
==============

Inner perimiter firewall.

``fw-int``
==========

Internal firewall.