Re: [Exim] domain trouble

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Autor: Peter Radcliffe
Data:  
A: exim-users
Assumpte: Re: [Exim] domain trouble
Philip Hazel <ph10@???> probably said:
> On Wed, 6 Sep 2000, Peter Radcliffe wrote:
> >   1) The DNS system itself. This imposes a length restriction and
> >      '.' as a seperator.

>
> Actually only the length restriction. Inside the DNS, names are stored
> as <length><chars> for each component, with a length of zero indicating
> the end (i.e. a null component). The use of a '.' to separate the
> components when displaying them is purely a convention. I see no
> restriction on the use of '.' within a component *at that level*.


Slightly unclearly, I was referring to the system as defined by the
RFCs, which say you can't use . within a label because it's used as a
label seperator.

All of this is convention, in one way or another :)

P.

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