License & Account

License

On the License page, you can add the purchased licenses to increase the user limit. Learn more about Synology MailPlus License Pack.

To add a license key:

  1. Click Add License.
  2. To continue the process, you must confirm your agreement to the terms and conditions.
  3. Make sure the network connection is stable and sign in to your Synology Account.
  4. Choose either of the following options:
  5. Follow the wizard to finish the settings. Once the license is successfully added, Synology MailPlus Server will automatically update the user limit.

To understand the licensing conditions:

If your email system is detected to conduct any of the following activities, the operations on the MailPlus Server interface will be restricted along with the security-related services suspended until you have enough valid license keys:

Note:

Account

On the Account page, you can select email service users, manage usage quota, and set the policy for a specific user or group. Also, you can set up a delegation policy to grant administrative privileges to other users.

To activate email services for users/groups:

Select email service users. You can further customize the mailbox storage quota and remove the data of the deactivated users to manage the growth of the server databases.

  1. Go to Account > User/Group to activate email service users.
  2. Select the target user or group and click Set Quota to configure the following settings:
  3. Save the settings.
  4. Click the document icon in the Info column to check the settings.
  5. For users with a deactivated license (e.g., former employees), you can select them and click Clear Data to remove all their emails and personal settings.

To configure the default settings:

Set up the default settings for all unspecified users and groups to save the effort of configuring each user and group one by one.

  1. Go to Account > Settings to configure the following settings:
  2. Save the settings.

Note:

To set up user policies:

Set up user policies for specific users or groups to regulate their access to email services and limit their traffic usage.

  1. Go to Account > User Policy.
  2. Click Add (the plus icon) on the top bar.
  3. In the pop-up window, enter a policy name and select a color for easy identification.
  4. Under Mail Delivery, configure the following rules:
    Rule Yes No By domain
    Disable auto forwarding Users cannot auto-forward emails. Users can auto-forward emails. Policies will follow the domain settings.
    Rule Value No value
    Daily sending quota (number) Set the maximum number of total messages that can be sent per day. Policies will follow the domain settings.
    Daily outbound traffic (MB) Set a size limit for the total messages sent per day. Policies will follow the domain settings.
    Single attachment size (MB) Set the maximum size of a single email attachment. Policies will follow the domain settings.

    Note that the above rules will override the user's original domain settings if there is any conflict in settings.

    Rule Yes No
    Send mail to internal users only Users will be restricted to sending emails to internal users only. Users will not be restricted to sending emails to internal users only.
  5. Under Service, configure the following rules:
    Rule Yes No
    Enable IMAP Users will be allowed to use IMAP. Client access via IMAP will be prohibited.
    Allow login only from LAN via IMAP Users can only sign in from a subdomain via IMAP. Users will have no restrictions on MailPlus login.
    Enable POP3 Users will be allowed to use POP3. Client access via POP3 will be prohibited.
    Allow login only from LAN via POP3 Users can only sign in from a subdomain via POP3. Users will have no restrictions on MailPlus login.
    Enable full-text search The server will index email content. The server will not index email content.
  6. Switch to the Target User tab and select the users or the groups to apply the policy to.
  7. Save the settings.
  8. The created policy will appear on the list.

Note:

To manage user policies:

Select a user policy to perform the following actions with the upper toolbar:

Note:

To set up delegation policies:

Delegate other users to manage settings (except for License) of MailPlus Server to ease the administrative burden.

Note that DSM administrators can manage all MailPlus Server settings. The delegation policy will not affect their administrative rights.

  1. Go to Account > Delegation.
  2. Click Add (the plus icon) on the top bar.
  3. In the pop-up window, enter the following information:
  4. Switch to the Target User tab and select the users or groups to apply the policy to.
  5. Save the settings. The delegation policy will appear on the right of the panel.

To manage delegation policies:

Select a policy to perform the following actions with the upper toolbar: