Hullo, or should I say, helo...
I'm absolutely darned if I can get around this. Hope someone can point me in the right direction.
I'm testing a simple setup with a LAN masquerading on the external interface, like
(LAN_MASQ Internal_Network__ -> All / All MASQ__External None).
E-mail clients on the LAN machines are set up to use the ASL internal interface for outgoing mail over the SMTP proxy.
Any mail sent this way (through the SMTP proxy) is annotated with the following header (yes, I think header is the right word):
Received: from [LAN_IP] (helo=LAN_hostname)
by SMTP_PROXY_HOSTNAME with smtp (Exim 4.10)
with the actual LAN IP/hostname for the sending machine (and the entry for Hostname (MX) in the SMTP proxy, which is fine).
Surely there's a way to hide the internal hostname/IP's?
Thanks.
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