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Re: Can I keep users from receiving mail from the Internet?

On Wed, 2004-12-08 at 10:54, Fedora wrote:
> I'm using sendmail as the MTA and I would like to make it impossible for
> certain users (root comes to mind, but there are other userids as well) to
> receive email from the Internet.
> I'd like to "block" it, as opposed to having some sort of filter throw it
> away after it's arrived.  Ideally, these few userids would appear to be
> invalid to anyone outside my network.
> On the other hand ... I do need for all users to be able to receive email
> "internally" (i.e., from localhost).
> In my case, spammers have discovered that there is <gasp!> a "root" user
> that they can send email to.
> Any thoughts?

I believe you can do this via the access file.  Just be careful, test it
for local users access, you could block email for a user from all

An entry something like:

To:root yourdomain xxx   error:5.7.0:550 Address invalid

May do the trick.  What I am not 100% sure of is if this will block
local email sent to root which you don't want to do.  

Scot L. Harris
webid cfl rr com

"I'd love to go out with you, but the man on television told me to say tuned." 

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