17 messages in net.sourceforge.lists.courier-users[courier-users] Re: couriertls, rfc10...
FromSent OnAttachments
Jon NelsonNov 25, 2003 7:52 am 
Andrew NewtonNov 25, 2003 11:42 am 
Jon NelsonNov 25, 2003 12:09 pm 
Jon NelsonNov 25, 2003 12:10 pm 
Andrew NewtonNov 25, 2003 12:51 pm 
Sam VarshavchikNov 25, 2003 5:48 pm 
Jon NelsonNov 25, 2003 6:15 pm 
Roger B.A. KloreseNov 25, 2003 6:21 pm 
Sam VarshavchikNov 25, 2003 6:29 pm 
Jon NelsonNov 25, 2003 6:55 pm 
Jon NelsonNov 25, 2003 7:00 pm 
Phillip HutchingsNov 25, 2003 7:43 pm 
Troy BenjegerdesNov 25, 2003 10:09 pm 
Sam VarshavchikNov 26, 2003 4:14 am 
Jon NelsonNov 26, 2003 7:10 am 
Sam VarshavchikNov 26, 2003 5:25 pm 
Julian MehnleNov 27, 2003 2:51 am 
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Subject:[courier-users] Re: couriertls, rfc1035, and /etc/hostsActions...
From:Sam Varshavchik (mrs@courier-mta.com)
Date:Nov 25, 2003 6:29:42 pm
List:net.sourceforge.lists.courier-users

Jon Nelson writes:

On Tue, 25 Nov 2003, Sam Varshavchik wrote:

Jon Nelson writes:

queries. The problem here, of course, is that names like 'localhost' and 'localhost.localdomain' do not resolve. What I'm trying to understand, MrSam, is the rationale for doing things this way?

A couple of reasons:

A) IPv6 (not implemented in the legacy resolver routines) B) The resolver routines must do more than just address lookups, namely MX and PTR records.

And, it's not clear to me what's the issue with couriertls not resolving stuff from /etc/hosts. All that means is that the IP address's hostname won't get picked up. Big deal.

Well, 'localhost', for one, won't ever work properly.

And the consequences of that are…?

Secondly, /etc/hosts is there specifically to provide a "static table of host names".

/etc/hosts is ancient legacy left over from the time before DNS. Before DNS came about, everyone used a host file to map IP addresses to hostnames. DNS replaced that procedure several decades ago.