Re: [exim] A riddle: What HELO/EHLO does remote host send?

Marc Haber wrote:
> On Sat, 3 Feb 2007 17:56:59 +0000 (GMT), Jethro R Binks
> <jethro.binks@???> wrote:
>> On Sat, 3 Feb 2007, Marc Haber wrote:
>>> On Fri, 2 Feb 2007 13:14:27 +0000 (GMT), Dennis Davis
>>> <D.H.Davis@???> wrote:
>>>> (4) A selection of names, eg "localhost.localdomain".
>>> During a period of time, newly installed Debian systems had their
>>> /etc/hosts misconfigured in a way that an installed exim 4 would HELO as
>>> localhost.localdomain. I suspect that most rejections based on that rule
>>> are false positives, maybe even from systems installed on your own
>>> campus.
>> I don't call that a 'false positive', I call it a misconfigured system
>> that needs to be fixed :).
>
> Agreed. But, is this misconfiguration _that_ bad to reject e-mails?
>

IMHO, it is. If you want to collaborate to the internet and run a public
server without annoying your neighbours, you should at least ensure that
you have done your best to configure your server. A trivial thing is to
give your system a name and configure the DNS to have it recognized.