Hi, Can I add a custom header to outgoing http requests from squid. I have compiled with "--enable-http-violations" I've tried something like this below but it doesn't appear to work. request_header_replace X-Sophos-WSA-ClientIP %SRC Can anyone suggest a way to achieve this ? The content of this e-mail, including any attachments, is a confidential communication between Virgin Australia, Pacific Blue or a related entity (or the sender if this email is a private communication) and the intended addressee and is for the sole use of that intended addressee. If you are not the intended addressee, any use, interference with, disclosure or copying of this material is unauthorized and prohibited. If you have received this e-mail in error please contact the sender immediately and then delete the message and any attachment(s). There is no warranty that this email is error, virus or defect free. This email is also subject to copyright. No part of it should be reproduced, adapted or communicated without the written consent of the copyright owner. If this is a private communication it does not represent the views of Virgin Australia, Pacific Blue or their related entities. Please be aware that the contents of any emails sent to or from Virgin Australia, Pacific Blue or their related entities may be periodically monitored and reviewed. Virgin Australia, Pacific Blue and their related entities respect your privacy. Our privacy policy can be accessed from our website: http://www.virginaustralia.com/