OriginalClientIP Exchange Message Tracking

reuvygroovy 776 Reputation points
2021-03-04T05:58:38.083+00:00

Before we put our Exchange server behind our F5 Load Balancer, we used to see the original ClientIP in the message tracking logs. But now since the Load Balancer is using NAT we no longer see the client IP. Regarding HTTP / Web we have a solution by using the XFF header within IIS/F5, but the question is can we do something for the SMTP protocol, so that we can also tracking applications that connect via SMTP to send mail?

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Andy David - MVP 145K Reputation points MVP
    2021-03-04T11:53:09.663+00:00

  2. reuvygroovy 776 Reputation points
    2021-03-07T11:19:49.953+00:00

    The X-forward is not relevant to SMTP, only to IIS/Web.