Re: FQDN via DHCP, then used in exim4
Thanks All,
I fully accept that exim is as it is, and being an
(instrumentation-)developer
myself it's easy to see how we got here. As stated in my very first post,
I did make it all work by using "proper" ;-) entries in /etc/hosts,
hostname and mailname. This being my first email server installation,
I was simply surprised and wanted to understand the background.
So, thanks again for your explanations and your patience
Klaus
On 19/05/13 20:25, Stan Hoeppner wrote:
On 5/19/2013 3:45 AM, Klaus Doering wrote:
>> Stan,
>>
>> Thank you for taking the time to explain your perspective. Maybe it is
>> the tone of your teachings that tickle me, maybe it's just that I'm no
>> big fan of sweeping statements a la "Don't do it, ever". As I described
>
> Many folks with long experience make forceful sweeping statements to
> prevent others from wasting time and to avoid frustration.
>
>> in my initial post, this thread concerns a small domestic setting.
>
> Yes, I got that.
> ...
>> I agree that in a different setting, where there are many users,
>> hundreds of emails per minute and other mission-critical stuff is going
>> on, one needs to design the infrastructure a lot more carefully.
>
> And this is the crux of it. As I said, people who write MTAs and other
> server applications, as well as OS maintainers, assume that static
> addresses are assigned in the traditional UNIX way. They simply don't
> consider that anyone would ever use DHCP to assign an address or
> hostname, or an MX record, to an internet facing server.
>
>> So, the initial question remains unanswered: what happens to the
>> information provided by the dhcp server as reported in the lease file in
>> /var/lib/dhcp, how is it accessed, and is there a way to make exim4 use
>> it?
>
> If there is a way I have no clue how to accomplish it. If you figure it
> out you may want to write a detailed paper and publish it for others who
> may want to follow in your footsteps.
>
> Best of luck.
>
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