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Subject: Re: BCC question
From: Wietse Venema (wietseporcupine.org)
Date: Thu Jun 08 2000 - 12:20:15 CDT

Christopher A. Adams:
> I have posted this message before and read the archives and FAQ, but still
> > have not found a solution to this. An MS Outlook user sends mail through a
> > MS Exchange server and about 1/3 of the list receives it as BCC.

Why are you asking this question on the Postfix users list? How
is Postfix involved with this question at all?

> > So, my question is- what is the origin of the BCC-
> > Majordomo,Sendmail (Postfix),sender's mail client/server, recipient's
> > mail client/server, etc?

With SMTP, recipient addresses are specified as part of the message
ENVELOPE, via SMTP commands.

With SMTP, the content of message headers does not need to bear
any relation to who is going to receive the mail.

        Wietse