[Mimedefang] Re: VERY Newbie Question

Jeff Rife mimedefang at nabs.net
Sat Oct 30 01:01:35 EDT 2004


On 30 Oct 2004 at 0:16, David F. Skoll wrote:

> > ...and the RFC pretty clearly says that an IP address should *never* be
> > used as the argument to HELO, so that rule *should* reject all e-mail.
> 
> Umm... reread his code.

Maybe you should?

This is his test:
  if ($ip ne $helo)

$ip is *always* of the form ###.###.###.###.

$helo can *never* be of that form *if* the connecting machine follows 
the RFC...it must be either foobar.domain.tld or [###.###.###.###].

So, if everybody followed RFC, that test can never be true, thus it 
will reject all mail.

As you said, it will only reject *almost* all e-mail, because a few 
machines don't follow RFC.


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