How do I add a domain-based rule?

Create domain rules

Domain rules define how the Outlook client (or any supported email client) should behave when sending emails to specific domains. They are used to force, enable, or disable the use of Secure Exchanges depending on the recipient and the sending context. If no domain is specified, the default behavior is applied. All configured rules apply to every user within the organization.

InfoInfo — What are domain rules used for?

Domain rules allow you to:

  • enforce the use of Secure Exchanges for sensitive domains

  • disable Secure Exchanges for specific domains

  • define different behaviors depending on whether attachments are included

  • apply a consistent security policy across your entire organization

Alert
Prerequisites

Before creating a domain rule:

How to configure a domain rule

Step 1: Access domain rules

Log in to the Secure Exchanges online portal.
Go to Options > Manage domain rules.

Step 2: Add a domain

Enter the domain for which you want to define a rule (e.g., secure-exchanges.com, gouv.qc.ca, etc.).


Step 3: Choose the rule to apply

Select one of the following options:

Disabled

Secure Exchanges will not be used for communications with this domain.

Mandatory

The use of Secure Exchanges will be required for this domain.
The user will not be able to disable it when sending an email.

Enabled

Secure Exchanges will be enabled by default for this domain.
However, the user will still be allowed to turn it off manually before sending.

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This rule also applies to users who had previously disabled Secure Exchanges by default.

Step 4: Define the application context

Choose when the rule should apply:

  • No file — only for emails without attachments

  • With file — only for emails with attachments

  • All emails — applies to all emails sent to this domain

*Managing unspecified domains (wildcard )

To define a default behavior for all other domains, use the wildcard symbol *.

Example

You want to:

  • disable Secure Exchanges for the domain gouv.qc.ca,

  • but make Secure Exchanges mandatory for every other domain.

Configuration:

  1. Create a Disabled rule for gouv.qc.ca

  2. Create a Mandatory rule using the wildcard *

➡️ Emails sent to gouv.qc.ca will follow that specific rule
➡️ Emails sent to any other domain will follow the * rule

Priority rule (important)

Warning
If an email is addressed to multiple domains at the same time, the most restrictive rule is automatically applied.

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