Re: [Exim] I don't understand why routers and directors?

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Author: Kai Henningsen
Date:  
To: exim-users
Old-Topics: Re: [Exim] I don't understand why routers and directors?
Subject: Re: [Exim] I don't understand why routers and directors?
ph10@??? (Philip Hazel) wrote on 14.06.00 in <Pine.SOL.4.21.0006140913540.14638-100000@???>:

> On Tue, 13 Jun 2000, Dan Kappus wrote:
>
> > What's the difference, really? Is there a reason for there to be two
> > different categories? I'm a bit stuck on this part in my reading of the
> > spec. Can someone clarify the why here?
>
> History, and lack of foresight on my part. Smail 3 has routers and
> directors; I copied the style. In the beginning they were very different
> (directors could direct only to local transports; routers only to remote
> ones; the set of "generic" options was different, etc). Evolution has
> brought them much closer together; I say in my course (and have said in
> a previous thread, and will say in the book) that one day the difference
> between them might be abolished. This will simplify things (code and
> documentation) a lot. I wish I'd thought of it at the start. However, it
> will need some careful planning. The concept of local_domains is still
> important for other things (relay checking, routing to "self") and so
> must somehow be preserved.


You might want to make several groups of domains available somehow, with
"local" being one of them. Complex setups would probably profit from this
(local, virtual class 1, virtual class 2, MX, ...).

MfG Kai