How to open header report from the Roundcube Webmail
Step 01: Login to your webmail account using webmail.<domain-name>.
Step 02: Select the email for which you need the header report as displayed in below screenshot.
Step 03: Select the arrow mark on the top right hand corner of the webamil as displayed in the below screenshot.
Step 04: Copy the whole report in the box and paste it in notepad.