How to protect an is-spam@xxx and no-spam@xxx alias?

[Claus Assmann]

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