On Tue, Aug 17, 1999 at 11:38:22PM -0400,
John R Levine <[EMAIL PROTECTED]> wrote:
>
> ORBS probes come from a single IP address so it's easy just to block
> them with tcpserver rules. While you're at it, you might as well
> block some of the other SMTP relay scanners:
Before you do, you should make sure blocking them isn't going to get
you put on their lists.
Also if you don't mind the occasional small amount of traffic, having
ORBS or one of the others tell you that your mail server is open, is
better than having abused by spammers when they find it.
