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Hide/masquerade internal machine name in SMTP headers

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Last Modified: 2013-11-30
I'm pretty sure this can't be done, but I'd love to hear any kind of suggestion or workaround. I need to do this otherwise my alternative is to rename the internal Windows2003 AD namespace, which I dread thinking about.

I'm also curious as to why our back-end Exchange INTERNAL name and IP shows in the headers whereas the front-end's information displays as what I specify in the SMTP server Advanced properties FQDN setting. The FQDN of the backend server doesn't show in the headers, which is what I want to happen, so I can hide the internal machine name.
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AkhaterSolutions Architect
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it would really help to tell us what exchange version you are running

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@Akhater: Exchange 2003.

@FDiskWizard: Thanks for the link. Unfortunately I don't have Exchange2007. Any ideas if it could be done w/Exchange 2003?
AkhaterSolutions Architect
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I should have clarified a little:

What I really need to know is if there's a way in Exchange2003 to hide or not include the Exchange "message-ID" in the headers for outbound SMTP, which contains the internal FQDN, which is still the only place that the internal hostname is showing. OR, if there's a way to alter the displayed FQDN in the message-ID line.
Solutions Architect
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Thanks for verifying that it's not possible with Exchange 2003
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