Email Relay - Microsoft Exchange On-Premises

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Trustifi admin portal

Step 1 – Verifying the plan and user type

⚠ NOTE! In case that you aren’t running under “Pro” plan and your user type isn’t an “Admin”, you will have to upgrade your plan to “Pro”.

Navigate to "My Plan" page and verify that your plan type is "PRO" and your level is "Admin".

"My Plan" page

Step 2 – Navigating to Outbound Management

Navigate to “Outbound Management” (Shield icon)

Navigating to "Outbound Management"

Step 3 – Navigating to the domains tab

The email relay section will be locked because you have no verified domains yet. Click on the “Domains” tab to continue.

Navigating to "Domains"

Adding new domain

This is a quick overview of the domain verification process. To view the full guide click here -

Step 4 – Adding a new domain

Now, we will need to add the domain used to send emails. Continue by clicking on the “Add Domain” button.

Adding a new domain

Step 5 – Verifying the domain

After adding the domain, you will have to copy and import the records to your DNS provider (e.g. DNS Made Easy, GoDaddy). Continue to the next step after all the DNS records have been imported to your DNS environment.

Showing the domain's DNS records

Note: You can also click on "Download records CSV" from the "Actions" menu to save these records as a CSV file.

Step 6 – Verifying the domain and navigating to the Plan Settings tab

After you have added all the DNS records to your domain, click on “Check if verified” to see if the status changes to “Verified”. Continue to the next step only if the domain has been verified.

Note: Depending on your DNS system, your domain may take up to 24 hours to update DNS records.

A verified domain

Step 7 – Enabling and generating the email relay secret key

In this part, you will need to enable the Email Relay toggle, and copy the “Email Relay key” which is the secret key that will be used to authenticate the transport flow of your emails.

At the "Plan Settings" tab, scroll to the "Email Relay Integration" section and click on the toggle to enable.

Enabling the Email Relay integration

After the integration was enabled, your secret key will be generated. You can click on the "copy" button to copy the Email Relay secret key for later use.

Copying the Email Relay secret key

Microsoft Exchange Admin Center

Step 8 – Navigating to the Exchange Admin Center – Mail flow connectors

First, you will need to log into your Exchange admin center using your admin credentials.

Once logged in, navigate to the "Mail flow" section and open the "Send connectors" tab.

Click on the "+" sign to add a new connector.

Creating a new send connector

Step 9 – Setting the connector's name and type

Give the connector a meaningful name, for example "Trustifi Outbound".

Then, set the connector type to "Custom".

Setting the connector name and type

Step 10 – Selecting the connector's routing type

For this part, you will need to select "Route mail through smart hosts".

Then, click the "+" sign to add the Trustifi smart host - and confirm.

Selecting the connector's routing type

Step 11 –Configuring the smart host's authentication

Once the smart host has been defined, you will need to configure how emails arriving to this smart host are authenticated.

First, select "Basic authentication" and check the box for "Offer basic authentication only after starting TLS".

For the username and password, you will need to use the secret key you have copied in step 7 from the Trustifi portal.

The first part of the secret key (before the colon) is the user name and the second part (after the colon) is the password. The colon itself should not be included in either part.

Setting the smart host authentication

For example, if your secret key is:

Then the user name will be - fff5f660564a66c35ae86db10d124310c663f2c4c9c8e94f

And the password will be -


Step 12 – Setting the connector's address space

The "Address space" dictates which domains should be used to send emails through this send connector.

To configure the address space, click on the "+" sign.

Adding an address space

Step 13 – Configuring the address space

In the new window, add the following values:

Type: SMTP

(this will apply to all domains)

Cost: 1

Configuring the address space

Once these values have been added, click "Save".

Step 14 – Configuring the address space

Confirm the address space has been configured according to the instructions above and click "Next" to continue.

Confirming the address space

Step 15 – Adding a source server

Now you will need to specify the source server for this send connector.

To add a source server, click on the "+" icon.

Adding a source server

Step 16 – Selecting a source server

Select the relevant source server for this send connector and click "Add".

When finished, click "OK" to continue.

Selecting a source server

Step 17 – Verifying the source server

Verify the selected source server is correct and click "Finish" to create the send connector.

Verifying the source server

Step 18 – Adding your domain(s) to the "domain ignore list"

To avoid duplications and other mail flow issues with internal emails, an exception needs to be set up in Trustifi for internal emails.

To do this, first navigate to "Outbound Management" > "Plan Settings" in the Trustifi admin portal and then scroll down to "Email Relay Integration".

Find the section titled "Domains/addresses ignore list" and add your domain(s) to this list.

Adding your domains to the ignore list

This will make sure your internal emails are always delivered directly.

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