Source sender IP not visible

Products

• Messaging Gateway

Issue/Introduction

One of the email account has been probably misused to send manipulated. The admins cannot find out the sender device IP address. The IP of original sender isn't visible. The sender IP is Exchange Server IP.

Environment

Messaging Gateway

Resolution

Messaging Gateway cannot see beyond the source IP of the Exchange Server
It is strongly recommended consulting Microsoft support if  the client needs to investigate further who sent these messages.