Re: Subtle qmail bug? (was Re: Handling an MX record of 0.0.0.0 or 127.0.0.1)

[Scott Gifford]

Markus Stumpf <[EMAIL PROTECTED]> writes:

> On Thu, Jan 25, 2001 at 01:56:45PM -0500, Patrick Bihan-Faou wrote:
> > Well failure to recognize that 0.0.0.0 is yourself is not quite DNS related
> > exploit. It is a bug.
> 
> If AOL or hotmail would decide to change their MX records to your mailserver
> this will for sure also cause you problems.

No it won't.  qmail will give an error that the MX records points back
to itself, and bounce the message.

qmail knows that MX records that point back to you are a problem, it
just doesn't know that 0.0.0.0 points back to itself.

That's why it's a bug.

------ScottG.