Follow these steps to view email headers in Horde:
- Access Horde Webmail.
- Open the email you want to review.
- Click the “Message Source” link in the text menu at the top of the message.
Notice
When you click this option, Horde will try to open a new window in your browser, and some browsers are configured to block pop-up windows by default. To resolve this, you just need to access your browser settings and allow pop-up windows to open, or, if the option appears at the top of the browser, accept the exception for the address it is trying to open.