[Mimedefang] The nerve of these people...

[Jim McCullars]

On Tue, 7 Jan 2003, Chad Stalvey wrote:

> Is there any way to stop people that try this sort of thing?
>
> Last Line is who it came from, but his email and ip and domain is all
> changing.

   In your sendmail.mc file that you use to generate your sendmail config
file, add this line:

	define(`confBAD_RCPT_THROTTLE', `10')dnl

This will cause sendmail to sleep for one second between commands once a
remote MTA has sent 10 invalid recipients (change the number to your
liking - I have heard that some people set it as low as three).  It won't
stop dictionary attacks, but it will slow them down.  HTH...

Jim