From owner-freebsd-hackers@FreeBSD.ORG  Mon Aug  1 18:28:55 2005
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Date: Mon, 1 Aug 2005 11:29:32 -0700
From: Claus Assmann <freebsd+hackers@esmtp.org>
To: Patrick Dung <patrick_dkt@yahoo.com.hk>
Message-ID: <20050801182932.GA24057@zardoc.esmtp.org>
References: <20050801172332.49832.qmail@web52109.mail.yahoo.com>
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Cc: freebsd hackers <freebsd-hackers@freebsd.org>
Subject: Re: How to protect an is-spam@xxx and no-spam@xxx alias?
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On Mon, Aug 01, 2005, Patrick Dung wrote:

> However, I don't want the people in the internet to send mail to these
> to account. But the people in the internet can send mail to other user
> in the system.

> Can this be done in Sendmail (and postfix and qmail)?

For sendmail 8:
http://www.sendmail.org/~ca/email/protected.html

For sendmail X:
http://www.sendmail.org/~ca/email/sm-X/doc-X.0.0.Alpha9.0/README.html#SECTION004102000000000000000