Author: Calum Mackay Date: To: Suresh Ramasubramanian CC: Jochen Erwied, hanasaki, LIST - Exim Subject: Re: [Exim] exim4 smart host - how to use it only when non-smarthost
fails
Suresh Ramasubramanian wrote: > Jochen Erwied writes on 12/29/2003 4:39 AM:
>> On Sun, Dec 28, 2003 at 08:03:14PM -0600, hanasaki wrote:
>>> Is there a way to have exim always try direct delivery and then fallback
>>> to smarthost if regular direct delivery fails?
>>
>> Yes. The option you are looking for is 'fallback_hosts' for your default
>> router.
>
> That won't really help if you get "550 we don't accept mail from hosts
> on dynamic IPs"
In the spec's discussion of the smtp transport option 'fallback_hosts',
it says:
"If Exim is unable to deliver to any of the hosts for a particular
address, and the errors are not permanent rejections, ..."
Wouldn't that rule out it's use in situations like 5xx errors, which I
would say *are* permanent rejections?
