Essential Configuration

After completing the Azure Configuration, you need to configure the TYPO3 extension with the values obtained from Microsoft Entra ID.

Attention

The Client ID can be found on the overview page in Azure and should not be confused with the Client Secret ID. For the secret configuration, only the Secret value itself is required, not the Secret ID.

Quick Navigation

This page covers the complete configuration setup for the Exchange 365 TYPO3 extension:

Configuration Variables - Required environment variables and settings
Configuration Example - Complete configuration example with screenshot
Alternative Configuration Methods - Different ways to configure the extension
Testing the Configuration - How to verify your setup works
Security Considerations - Important security guidelines
Configuration Validation - Steps to validate your configuration

Configuration Variables

The extension requires several configuration variables to be set in TYPO3. These can be configured through environment variables or directly in the TYPO3 configuration.

The following steps show the configuration with .env variables, but you can also set them in the LocalConfiguration.php file or through the TYPO3 Admin Panel if available. .. note:: The configuration variables are prefixed with TYPO3_CONF_VARS__MAIL__transport_exchange365_ to avoid conflicts with other mail transports.

Set the mail transport to Exchange365Transport.

Configure TYPO3 to use the Exchange 365 transport instead of the default SMTP transport.
```
TYPO3_CONF_VARS__MAIL__transport=OliverKroener\\OkExchange365\\Mail\\Transport\\Exchange365Transport
```
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Configure the Tenant ID.

Set the Tenant ID obtained from step 4 of the Azure Configuration.
```
TYPO3_CONF_VARS__MAIL__transport_exchange365_tenantId='your-tenant-id-here'
```
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Attention

Replace your-tenant-id-here with the actual Tenant ID from your Azure application overview page.
Configure the Client ID.

Set the Client ID (Application ID) obtained from step 4 of the Azure Configuration.
```
TYPO3_CONF_VARS__MAIL__transport_exchange365_clientId='your-client-id-here'
```
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Attention

Replace your-client-id-here with the actual Client ID from your Azure application overview page.
Configure the Client Secret.

Set the Client Secret value obtained from step 7 of the Azure Configuration.
```
TYPO3_CONF_VARS__MAIL__transport_exchange365_clientSecret='your-client-secret-here'
```
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Attention
- Replace your-client-secret-here with the actual Secret Value (not the Secret ID)
- This is sensitive information - keep it secure and never expose it in public repositories
Configure the sender email address.

Set the email address that will be used as the sender for all emails sent through this transport.
```
TYPO3_CONF_VARS__MAIL__transport_exchange365_fromEmail='service@your-domain.com'
```
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Attention

The email address will fall back to TYPO3's $GLOBALS['TYPO3_CONF_VARS']['MAIL']['defaultMailFromAddress'] if not specified here.
Note
- Replace service@your-domain.com with a valid email address from your organization (it must exist in your Exchange 365 environment as SharedMailbox or User Mailbox)
- This email address must exist in your Exchange 365 environment
- The application needs permission to send emails on behalf of this address
Configure save to sent items (optional).

Determine whether sent emails should be saved to the sender's "Sent Items" folder.
```
TYPO3_CONF_VARS__MAIL__transport_exchange365_saveToSentItems=1
```
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Note
- Set to 1 to save emails to Sent Items folder
- Set to 0 to skip saving emails to Sent Items folder
- Default value is 0 (enabled) if not specified

Configuration Example

Here's a complete example of all required configuration variables:

TYPO3 configuration showing Exchange365 transport variables setup

Environment Variables (.env file)

You can configure these settings using a .env file in your TYPO3 root directory:

# Exchange 365 Mail Transport Configuration
TYPO3_CONF_VARS__MAIL__transport=OliverKroener\\OkExchange365\\Mail\\Transport\\Exchange365Transport
TYPO3_CONF_VARS__MAIL__transport_exchange365_tenantId='your-tenant-id-here'
TYPO3_CONF_VARS__MAIL__transport_exchange365_clientId='your-client-id-here'
TYPO3_CONF_VARS__MAIL__transport_exchange365_clientSecret='your-client-secret-here'
TYPO3_CONF_VARS__MAIL__transport_exchange365_fromEmail='service@your-domain.com'
TYPO3_CONF_VARS__MAIL__transport_exchange365_saveToSentItems=1

Alternative Configuration Methods

In Typo3 config files

Alternatively, you can add these settings directly to your TYPO3 configuration files, such as config/system/settings.php or config/system/additional.php or typo3conf/LocalConfiguration.php.

<?php
return [
    // ...existing configuration...
    
    'MAIL' => [
        'transport' => 'OliverKroener\\OkExchange365\\Mail\\Transport\\Exchange365Transport',
        'transport_exchange365_tenantId' => 'your-tenant-id-here',
        'transport_exchange365_clientId' => 'your-client-id-here',
        'transport_exchange365_clientSecret' => 'your-client-secret-here',
        'transport_exchange365_fromEmail' => 'service@your-domain.com',
        'transport_exchange365_saveToSentItems' => 1,
    ],
    
    // ...existing configuration...
];

Or using the $GLOBALS syntax:

<?php
// In typo3conf/LocalConfiguration.php or ext_localconf.php
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport'] = 'OliverKroener\\OkExchange365\\Mail\\Transport\\Exchange365Transport';
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_exchange365_tenantId'] = 'your-tenant-id-here';
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_exchange365_clientId'] = 'your-client-id-here';
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_exchange365_clientSecret'] = 'your-client-secret-here';
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_exchange365_fromEmail'] = 'service@your-domain.com';
$GLOBALS['TYPO3_CONF_VARS']['MAIL']['transport_exchange365_saveToSentItems'] = 1;

Attention

Replace placeholder values with your actual Azure configuration values
When using PHP syntax, use single backslashes (``) in class names instead of double backslashes
Keep the client secret secure and never commit it to version control

Testing the Configuration

After configuring all variables, you can test the email functionality by:

Sending a test email through TYPO3's mail functionality
Checking the TYPO3 logs for any error messages
Verifying that emails are received at the intended recipients
Checking the sender's "Sent Items" folder if saveToSentItems is enabled

Tip

Enable TYPO3's developer log to see detailed information about the email sending process and any potential issues with the Exchange 365 integration.

Security Considerations

Warning

Azure Credential Security

Store the clientSecret securely using environment variables or encrypted configuration
Never commit secrets to version control systems
Rotate client secrets regularly before expiration
Use different Azure applications for different environments (dev/staging/prod)
Monitor Azure sign-in logs for unauthorized access

Configuration Validation

To verify your configuration is correct:

Check in backend:
- Navigate to the TYPO3 Admin Panel
- Check the mail configuration under Settings > Environment > Test Mail Setup
- Ensure the transport is set to Exchange365Transport and all required fields are filled

Check TYPO3 configuration:

// In TYPO3 backend or debug context
\TYPO3\CMS\Core\Utility\DebugUtility::debug($GLOBALS['TYPO3_CONF_VARS']['MAIL']);

Test email sending:

// Test email functionality
$mail = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Mail\MailMessage::class);
$mail->to('test@example.com')
    ->subject('Test Email')
    ->text('This is a test email from TYPO3.')
    ->send();

Check logs: Monitor TYPO3 logs for authentication or sending errors