If your using postfix or qmail you should be able to set up some
"virtual" accounts.
These are not real logins, but the mail server accepts mail for these
users and people can 
"login" and pull mail. They can't actually login to the box, but can
pull email thru pop or whatever. There's a howto on this, I haven't used
it. So don't know how to tell you to do it.

Hope this gives you some direction to look in.

Brian
PS I don't know if sendmail can do this, probably some add on program
will.

> -----Original Message-----
> From: Dale Herring [mailto:dale_n_ks@yahoo.com]
> Sent: Thursday, March 14, 2002 4:02 PM
> To: kclug@kclug.org
> Subject: Re: denying loggins
> 
> 
> This is for users that have two logins. One that I
> allow them to connect with and the second is a curtesy
> e-mail account.  They can connect with the primary
> user-name, but not the secondary. Or that is the idea
> behind it anyway. The secondary will only allow them
> to check e-mail with program such as OE or webmail
> --- Jonathan Hutchins <hutchins@opus1.com> wrote:
> > ----- Original Message -----
> > From: "Dale Herring" <dale_n_ks@yahoo.com>
> > 
> > > Even with a shell of /bin/false or /dev/null they
> > are
> > > still able to connect to the modems. Just not able
> > to
> > > get a shell. I want to prevent them from
> > connecting
> > > with that login completely. Basically I give some
> > > users two logins. One to connect with and the
> > other is
> > > a usable second e-mail. I want them to be able to
> > get
> > > the e-mail but not connect to the modem with the
> > > second username.
> > 
> > Forgive my denseness, but how are they connecting to
> > get the e-mail if
> > they're not connecting with the modem?
> > 
> 
> 
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