Re: [EXIM] Confused about MX looping.

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Autor: Nigel Metheringham
Fecha:  
A: Jeffrey Goldberg
Cc: exim-users
Asunto: Re: [EXIM] Confused about MX looping.
} First of all, it appears that the default configuration works.
} With no routers other than what is in the default configuration,
} this appears to actually work just fine. However, I fear that this
} in not safe. If gate.rmcs goes down, do I have a chance of looping?
} What do I need to do to stop it?

What I think you need to do is this:-

1. Local domains is set to nothing (or domains that *really* are local).

2. directors how you like - they have no effect for normal config

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 =


This is actually the default other than setting "relay_domains_include_loca
l_mx"

4. A normal smtp router/transport set

} 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.

    Nigel.
-- 
[ Nigel.Metheringham@???   -  Systems Software Engineer ]
[ Tel : +44 113 251 6012                   Fax : +44 113 234 6065 ]
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