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In this section you can define the settings used for sending email notifications.

Sender Address (Default Setting)

Use an SMTP address, such as 'cryptshare@yourdomain.com' for Cryptshare to send notifications. This address is used for the standard notifications to senders and recipients as well as for alert messages sent to the administrators of the system. The domain part should be to be identical with the email domain your email server is set up for.

Note that this setting also affects system notifications.

Default Server Setting

Please note, that this setting is a default value for the creation of new Policy Rules.

Sender Name (Default Setting)

This name is shown in most email client software as sender instead of the email address. This is more convenient for the user and allows you to choose a descriptive name for your Cryptshare Server (e.g. YourCompany Secure File Exchange) users will see.

Default Server Setting

Please note, that this setting is a default value for the creation of new Policy Rules.

SMTP Host

Cryptshare sends all notification messages using this SMTP host. For Cryptshare Appliances, which are shipped with a local mail relay (postfix), this should be "localhost". In most of the other cases this should be the DNS name or IP address of your company's email server.

Please make sure that the email server accepts email relaying from the IP address of the Cryptshare Server host.


SMTP Port

By default, port 25 is used for all smtp email communication. If you want to use another port for the connection between your Cryptshare Server and your Email Server, you can set the port number here.

SMTP-Authentication

If your mail server requires SMTP authentication, you need to enable this option. Please enter the username and password of a corresponding user that is set up in your mail server and allowed to send SMTP messages.

Cryptshare supports the following SMTP authentication mechanisms (in the order of application): DIGEST-MD5,PLAIN and LOGIN.

Connection Security

Use this setting to specify the type of connection security that is used to connect to the SMTP server.
None: The connection is not encrypted.
STARTTLS: The connection is initiated without encryption and then upgraded to SSL/TLS encryption, if it's supported by the SMTP server.
SSL/TLS: The connection is initiated with encryption. The protocol and protocol version is negotiated with the SMTP server, based on what each side supports.

Mail Format (Default Setting)

Cryptshare can create notification messages in different formats. Choose the format you prefer. The recommended format is 'Multipart' as it contains html and plain text content and can be interpreted by most email clients.

Default Server Setting

Please note, that this setting is a default value for the creation of new Policy Rules.

Mail Encoding (Default Setting)

Email messages can be encoded in different formats. The most common format in the western cultural sphere is 'Quoted Printable'.

Default Server Setting

Please note, that this setting is a default value for the creation of new Policy Rules.

Handling Images in Emails

There are different techniques to display images in emails. Depending on what method is used, certain email clients will show images not until a security prompt is confirmed by the user.
Please choose one of the four methods that works best for your users and conforms to your companies policy.

External

Images are referenced by an URL and loaded by the email client from a web server.

Multipart

Images are part of the email as multipart attachments, and referenced from within the message body.

Embedded

Images are part of the email as encoded inline data inside the message body.

Not shown

Images will not be shown at all.

Individual Sender Addresses

If this option is enabled email headers will be set according to the specifications in RFC4021. If not active, the sender address configured for this server or configured within a specific Policy Rule will be used.

What happens if the option is enabled?

If the option is enabled the email headers will be set as follows:

  • Sender: The address of the server
  • From: The address of the sender
  • Reply-To: The address of the sender
  • Return-Path: The address of the sender

In case a non-delivery-report is sent, the original sender of the transfer will be the recipient of this report.

What happens if this option is disabled?

If the option is disabled the email headers will be set as follows:

  • Sender: The address of the server
  • From: The address of the server
  • Reply-To: The address of the server
  • Return-Path: The address of the server

In case a non-delivery-report is sent, the address setup in the server settings or Policy Rule settings will be the recipient of this report.

Test Mail Server Settings

If you enter an email address and press the 'Send test message' button, Cryptshare will try to send you an example message, using the current settings. It is not necessary for this to save the settings before.

System Notifications

On Cryptshare Appliances a number of automated system notifications are sent, like OS patch notifications.

When saving these settings on a Cryptshare Appliance you will be prompted to restart the Cryptshare Server. During the next startup, notifications for OS Updates and Patches for Cryptshare Appliances will be configured to use the configured address for the sender address as well. More information about the configuration and details about the notifications, as well as general information about the appliance scripts can be found here.


If your SMTP mail server requires a login, please refer to the Technote Configuring Postfix mail server


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