Setting EXIM envelope_to_add

Setting EXIM envelope_to_add

If you are using EXIM as your email server software, you may come across the need to set the envelope_to_add option. In this article, we will explain what this option does and how to set it up. Whether you are a beginner or have some technical knowledge, we will guide you through the process step by step.

Understanding envelope_to_add

When an email is sent, it consists of two main parts: the envelope and the message. The envelope contains information about the sender and recipient, while the message contains the actual content of the email. The envelope_to_add option in EXIM allows you to modify the recipient address in the envelope before the email is delivered.

This can be useful in various scenarios. For example, if you have a mailing list and want to redirect all incoming emails to a specific address, you can use envelope_to_add to change the recipient address accordingly. It provides flexibility and control over the email routing process.

Setting up envelope_to_add

To set up envelope_to_add in EXIM, follow these steps:

1. Connect to your server via SSH or any other preferred method.
2. Locate the EXIM configuration file. It is usually located at /etc/exim/exim.conf or /etc/exim4/exim4.conf.
3. Open the EXIM configuration file using a text editor.
4. Search for the section that begins with begin routers. This section contains the configuration for various routers in EXIM.
5. Within the begin routers section, find the router that you want to modify. It may be named dnslookup or localuser depending on your setup.
6. Add the following line within the router configuration block, just before the route_list line:

envelope_to_add = [email protected]
  

Replace [email protected] with the desired recipient address you want to set. This will change the recipient address in the envelope to the specified address.

Save the configuration file and exit the text editor.

Restarting EXIM

Once you have made the necessary changes to the EXIM configuration file, you need to restart the EXIM service for the changes to take effect. Follow these steps:

1. Open your terminal or SSH session.
2. Run the following command to restart the EXIM service:

sudo service exim restart
  

After running the command, EXIM will restart, and the envelope_to_add option will be active with the new recipient address.

Testing the Configuration

To ensure that the envelope_to_add option is working correctly, you can send a test email and check the envelope recipient address. Follow these steps:

1. Compose a test email using any email client or webmail service.
2. Send the email to your server.
3. After the email is delivered, log in to your server and locate the email in the appropriate mailbox.
4. Open the email and view its headers or raw source.
5. Look for the envelope-to field in the headers. It should display the new recipient address you configured using envelope_to_add.

If the envelope-to field shows the correct recipient address, then the envelope_to_add option is working as expected.

Conclusion

The envelope_to_add option in EXIM allows you to modify the recipient address in the email envelope. By following the steps outlined in this article, you can easily set up and configure envelope_to_add to redirect emails or customize the routing process. Remember to restart the EXIM service after making changes to the configuration file. If you encounter any issues, refer to the EXIM documentation or seek assistance from your server administrator or technical support.