On Mon, Feb 22, 1999 at 04:13:13PM +0000, [EMAIL PROTECTED] wrote:
> I'm running qmail on my little Linux box with a couple of folks using it as
> there postoffice. I've noticed in the maillog a continueing entry for
> messages to someone called "[EMAIL PROTECTED]". The qmail pop logs:
> "Sorry_I_couldn't_find_any_host_by_that_name._(#4.1.2)/".
>
> So, what's happening? Who's the smart guy? How can I stop this if I should.
> And I think I should.
If there are only a couple of people using your mail relay and your relay isn't
open for everyone in the world to use, you could ask each of your users, "Who's
the wise guy who's trying to send mail to [EMAIL PROTECTED]?"
The problem is, however, that your relay *is* open for everyone in the world to
use, and I suspect that the message to [EMAIL PROTECTED] was sent by someone who
was testing to see if you had an open relay. This means that you've removed
your rcpthosts file, and you're just asking to be used as a spam relay.
Read FAQ 5.4 and
ftp://koobera.math.uic.edu/www/qmail/faq/servers.html#authorized-relay.
Chris
