Subject: Re: Message-Id header

From: "Norberto H. Altalef" <[email-masked]>
Date: Wed, 3 Jan 1996 13:03:07 -0300 (GMT-0300)

Let me do an aclaration on this subject.
In order to simplify the administration, I have configure "sendmail" to
hide the hostname in the mail address, so that an address of the form
"[email-masked]" becomes "name@domain".
But, the hostname still appears in the last part of the Message-ID header.
I didn't find any way configuring sendmail or pine, to change it, to a form
coherent with the mail address. 
(Sorry, but I'm not trying to forge the headers nor obscure the origin of 
a message).

I will appreciate very much if someone could give me some help on this.

> On Sun, 31 Dec 1995, Tim Pierce wrote:

> In article <[email-masked]>,
> Ed Greshko <[email-masked]> wrote:
> 
> >On 31 Dec 1995, Jeff Mercer wrote:
> >
> >> [email-masked] ("Norberto H. Altalef") wrote:
> >>
> >> >I'm interested in hide the host name from it.
> >> 
> >> What, tell you how to forge Message-ID headers so you can be a dickweed and
> >> spam Usenet? Hah! Fuck off.
> >
> >	Some people feel that to reveal their hostname can result in
> >security problems.  Their intentions are not as you cite.
> 
> Those people are nimrods.  Obscuring the origin of a message is a
> security risk in its own right.  Besides, if the nature of your
> organization is so sensitive that even revealing the name of a
> machine within it is dangerous, then simply removing it from the
> Message-ID is not a sufficient solution.  Post from a different
> system.
> 
> >In any case
> >your use of profane language is inappropriate.
> 
> Crap.
> 

Many thanks

Norberto Altalef
<[email-masked]>

---

From: [email-masked] (John Stanley)
Date: 4 Jan 1996 23:44:52 GMT

In article <[email-masked]>,
>But, the hostname still appears in the last part of the Message-ID header.

So? Why is this a problem? 

>coherent with the mail address. 

How would you guarantee unique message id's if you allow each host to
create their own out of the domain space?