SMTP authentication (w2k SMTP service)

From: Albilol (nomail@nospam.com)
Date: 06/06/02 

From: Albilol <nomail@nospam.com>
To: focus-ms@securityfocus.com
Date: Thu, 6 Jun 2002 15:57:06 +0100

I'm using the Microsoft SMTP service that comes with Windows 2000 Workstation.

I've enabled the Guest account, for internal network reasons.

I've setup SMTP to authenticate clients via Windows Authentication Package.

Now, users beyond my internal network can access SMTP via the guest account. I
would like to restrict SMTP to just a few accounts.

Anyone knows how to achieve this (without disabling the Guest account)?
It seems there's no place in the GUI to set ACLs...

PS: Naturally I've a firewall in place which just permits connections to the SMTP
service and I'm not afraid of having the Guest account enabled.

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