Re: Re [Exim] multiple ip address (re)routing

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Author: Philip Hazel
Date:  
To: Jon Kyme
CC: exim-users
Subject: Re: Re [Exim] multiple ip address (re)routing
On Thu, 27 Jun 2002, Jon Kyme wrote:

> > Surely the routing in your TCP/IP stack should be able to choose the
> > correct interface? (Mind you, it's a long time since I understood the
> > "route" command. :-)
>
> I never will understand routing. But if you have multiple routes available
> (via diferent gateways) would one always get chosen over the other(s) unless the routing tables change / are changed?


That's something different. I understood the original question to be
about accessing two different ISPs, whose IP addresses were accessible
via different interfaces. Normal routing should take care of this.

If you can get to the same IP address through two different interfaces,
I don't know (a) how to set up the routes nor (b) how the TCP/IP stack
behaves. You need a routing expert.

> Exim 4 smtp transport 'interface' is expanded ! How neat is that?
> What can you not do with duct tape! (or exim) So would only need one
> transport.


If you need to specify the interface explicitly, yes, indeed, that's
true.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.