SPX Configuration

On the SPX Encryption > SPX Configuration tab you can enable SPX encryption and configure general settings for all SMTP users.

To configure SPX encryption, proceed as follows:

  1. Enable SPX encryption.

    Click the toggle switch.

    The switch turns green.

  2. In the sections of this tab, make the required global settings.
  3. On the SPX Templates tab, modify the existing Sophos Default Template and/or add new SPX templates.
  4. On the SMTP > Global tab, select the Global SPX Template.
  5. Optionally, if using SMTP Profile mode, select the desired SPX templates for the respective SMTP profiles.

Note – If you want users to SPX-encrypt email messages via the Microsoft Outlook plugin, make sure they have access to the Sophos Outlook Add-in tab in the User Portal to be able to download the add-in themselves. If you use another email messenger you need to set the header manually by yourself.

SPX Encryption Precedence

Prefer SPX Encryption: If enabled and S/MIME and/or OpenPGP are activated, SPX encryption has precedence over S/MIME and OpenPGP.

Click Apply to save your settings.

SPX Password Settings

Minimum length: The minimum number of characters allowed for a password specified by the sender.

Require special characters: If enabled, the password specified by the sender must contain at least one special character (non-alphanumeric characters and whitespace are treated like special characters).

Click Apply to save your settings.

SPX Password Reset

Reset password for: Here you can delete the password of a recipient. Enter the recipient's email address.

Click Apply to save your settings.

SPX Portal Settings

Hostname: Enter the hostname or your SPX portal.

Listen address: Select your listen address for your SPX portal.

Port: Enter the port on which the SPX reply portal should listen.

Allowed Networks: Add or select the networks that should be allowed to access the SPX portal. This should be set to Any so that anyone users send an SPX-encrypted message can access it.

Click Apply to save your settings.

SPX Expiry Settings

Allow secure reply for: Specify for how long the recipient of an SPX encrypted message is allowed to send a reply over the SPX reply portal.

Keep unused password for: Specify the expiry time of a password that was not used meanwhile. For example, if Keep unused password for is set to 3 days, the password will expire at 0 o'clock if there was no SPX-encrypted message sent for a specific recipient.

Note – If Keep Unused Password for is set to 0 days, the password will be saved and expires at 0 o'clock.

Allow password registration for: Specify for how long the recipient is able to register a password for the SPX portal to view the current encrypted mails. Only for password type Specified by recipient. After the expiry time the mails will be dropped.

Registration reminder frequency: Specify in which frequency the recipient should get a reminder to register a password.

Click Apply to save your settings.

SPX Notification Settings

Send notification on error to: Specify whom to send a notification when an SPX error occurs. You can send the notification to the administrator, to the sender, or to both, or you can send no notification at all. Error messages will always be listed in the SMTP log.

Tip – SPX error messages can be customized on the Management > Customization > Email Messages tab.

Click Apply to save your settings.