"Joachim F. Selinger" wrote:

> I hope this is not an FAQ, but some UCE mails don't show any indication of
> the actual recipient address in the headers when accepted by postfix for a
> local user. Is there any switch or setting that we are missing in our
> postfix setup that would cure this? Our users would like to know the
> address through which they received the junk, but sometimes can't, as the
> messages get delivered into a cyrus IMAP/POP folder.

The headers are not used for delivery, only the envelope recipients are.
That means that a spammer can forge the headers as he/she likes, as long
as the evelope recipient is local to your system.

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