Re: [Exim] Routing mail via "smarthost" with only MX records…

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Author: Blaine Simpson
Date:  
To: exim-users
Subject: Re: [Exim] Routing mail via "smarthost" with only MX records.
RTFM. Exim 4.20 Spec section 41.1.


Nigel Wade wrote:
>
> Our campus is set up so that all incoming and outgoing mail has to be
> routed
> via the campus mail servers. For incoming mail this is not a problem as it
> gets passed on to our mail server.
>
> However, I'm having trouble getting Exim to route outgoing messages via the
> mail servers as the mail server DNS entry only has MX records. AFAIK this
> should be perfectly fine and has worked for years with sendmail, and it's
> not something which I can change.
>
> Exim refuses to route the mail as the smtp transport only appears to do a
> DNS A record search and no MX record search. I've tried the following two
> methods and both fail in the smtp transport with failed lookups on
> lepp.le.ac.uk :
>
>   dnslookup:
>     driver = manualroute
>     domains = ! +local_domains
>     transport = remote_smtp
>     ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
>     route_list = * lepp.le.ac.uk
>     no_more

>
>   remote_smtp:
>     driver = smtp

>
> and this pair:
>
>   dnslookup:
>     driver = dnslookup
>     domains = ! +local_domains
>     transport = remote_smtp
>     ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
>     no_more

>
>   remote_smtp:
>     driver = smtp
>     hosts = lepp.le.ac.uk
>     hosts_override

>
>
> Does anyone know how I can get the smtp transport to lookup the MX record
> for our campus mail servers?
>
>
> --
> Nigel Wade, System Administrator, Space Plasma Physics Group,
>             University of Leicester, Leicester, LE1 7RH, UK
> E-mail :    nmw@???
> Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555

>
>
> --
>
> ## List details at http://www.exim.org/mailman/listinfo/exim-users Exim
> details at http://www.exim.org/ ##
>


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