On Mon, 9 Feb 1998, Nigel Metheringham wrote:
> What I think you need to do is this:-
>
> 1. Local domains is set to nothing (or domains that *really* are local).
That is already the case. There are just a handful of local domains.
> 3. set relaying as follows:-
> relay_domains =
> relay_domains_include_local_mx
> no_relay_match_host_or_sender
> sender_address_relay =
> sender_host_accept_relay =
> sender_host_reject_relay =
> sender_net_accept_relay = 127.0.0.1/8
> sender_net_reject_relay =
Hmm. I'm not sure that I understand all of that. What I have is
relay_domains = *.cranfield.ac.uk
sender_host_accept_relay = *.cranfield.ac.uk
sender_net_accept_relay = 138.250.0.0/16
So, although rmcs.cranfield.ac.uk (for which we are an MX backup) is
not among the local_domains it is amoung the relay_domains.
> This is actually the default other than setting "relay_domains_include_loca
> l_mx"
I'm not entirely happy with relay_domains_include_local_mx since it means
that anyone could have us do MX backup service for them without asking us.
Of course that is unlikely, since we could retaliate by
eating/reading/changing their mail, but I have grown paranoid over the
past year.
> } With sendmail there was a mailertable file in which I would list something
> } like
> }
> } rmcs.cranfield.ac.uk smtp:[gate.rmcs.cranfield.ac.uk]
> }
> } Do I need a router like this?
>
> No - the DNS gives you that information, why replicate it.
Great. I always thought that I was specifying redundent information in
the mailertable.
-j
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