How To: Manage MDA Settings  
===========================

The Mail Delivery Agent (MDA) is responsible for delivering email messages to the recipient inboxes on the server. 

From the MDA page in NodeWorx, server administrators may manage the IMAP and POP3 services, including editing the 
connection limits per IP, SSL mode, cipher suite, and default process limit. 

.. contents::

To Manage the Dovecot Service
-----------------------------

Checking Dovecot Status
^^^^^^^^^^^^^^^^^^^^^^^

#. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)
#. In NodeWorx, navigate to **System Services > Mail Server > MDA Settings**

   .. image:: /images/nw-mda.png
      :alt: mda page 

#. Under MDA Mail Server Control [POP3, POP3-SSL, IMAP, IMAP-SSL], the Dovecot Status bar indicates the current status 
   of the service

   .. image:: /images/mda-dovecot-status.png
      :alt: dovecot status

   - It is also possible to control the status of the service from this interface:

      - **Play** starts the service
      - **Arrow** restarts/refreshes the service
      - **Stop** stops the service

Setting Dovecot Start-On-Boot Options 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

#. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)
#. In NodeWorx, navigate to **System Services > Mail Server > MDA Settings**

   .. image:: /images/nw-mda.png
      :alt: mda page 

#. Under MDA Mail Server Control [POP3, POP3-SSL, IMAP, IMAP-SSL], select either **Yes** or **No** from the Start on 
   Boot-up dropdowns 

   .. image:: /images/nw-mda-onboot.png
      :alt: mda page 

#. Click **Update**

To Edit Service Settings for Dovecot
------------------------------------

#. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)
#. In NodeWorx, navigate to **System Services > Mail Server > MDA Settings**

   .. image:: /images/nw-mda.png
      :alt: mda page 

#. Under Dovecot Server Information, update the desired fields:

   .. image:: /images/mda-dovecot-server-settings.png
      :alt: dovecot server settings 
   
   - **Protocols**: The MDA Services in use on the server
   - **Max Connections Per User IP**: The number of POP3 or IMAP connections allowed per IP 

#. Click **Save**

To Edit Security Settings for Dovecot
-------------------------------------

#. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)
#. In NodeWorx, navigate to **System Services > Mail Server > MDA Settings**

   .. image:: /images/nw-mda.png
      :alt: mda page 

#. Under Dovecot Global Settings, update the desired fields:

   .. image:: /images/mda-dovecot-global-settings.png
      :alt: dovecot global settings 
   
   - **SSL Mode**: States whether secure MDA services/ports are required to be used
   - **SSL Minimum Protocol**: The minium TLS version 
   - **SSL Cipher Suite**: The cipher suite to be used for MDA services
   - **Default Process Limit**: Maximum number of processes that can exist
   
#. Click **Update**