As a followup, we found a workaround...
postconf -e bounce_size_limit=1
zmcontrol restart
(Yes, this is Zimbra.)
This had the effect of including the bounce notification and headers,
but without the original email content (and no .eml attachment).
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Sent from:
The sending platform is Sitecore, which I believe is a Microsoft platform.
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Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html
Jim Rice:
> Is there any way to configure bounce to compose the response message
> in clear text (message/rfc822)?
I can assure you that Postfix does not send .eml attachments.
That's a Microsoft thing.
In a Postfix bounce message, the undelivered message is returned
as message/rfc822. Proof is