Re: [Exim] Problem with routers

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Autor: Andrew D
Data:  
Para: e-mail lists, exim-users
Asunto: Re: [Exim] Problem with routers
----- Original Message -----
Sent: Sunday, June 03, 2001 10:42 AM
Subject: [Exim] Problem with routers


G'Day,

-snip-

>    ISP2            ISP2
>    (ISDN)          (DSL)
>     |               |
>     |               |
>     |               |
>    firewall1-----firewall2
>    (exim)
>     |
>     |
>    LAN

>
> Fireall1 has a static route to 139.134.5.153 through firewall2.
> When our DSL link is down, exim complains there is no route to
> host (as firewall2 no longer has a default route)
>
> 2001-05-24 06:42:03 152fSC-0002L9-00 139.134.5.153
> [139.134.5.153]: No route to host


> Ideally I would like exim to then pass onto the next router,
> beging a lookuphost in this case. The documentation reports that

which won't help as there is still no route to host because of your static
route on firewall one.

> pass_on_timeout is for DNS lookups, but in this case I am using
> an IP address (I have tried a few options, but this was the last
> option I tried and obviously did not work).


This isn't a DNS timeout as for that option but a no route to host. so
anything that u setup in exim ain't gonna work (by ur network spec :))
What I suggest is that u get your firewalls to talk to each other (if
possible) and firewall 1 automatically change the default routes when the
DSL fails, also allowing other traffic through ur isdn. a much better
solution :)

HTH
cya
Andrew



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