Re: [exim] Fallback SMTP transport

On 07/02/2021 14:13, Florian Weimer via Exim-users wrote:
> * Jeremy Harris via Exim-users:
>
>> On 07/02/2021 13:35, Florian Weimer via Exim-users wrote:
>>> Is it possible to define a fallback transport that is used if a
>>> connection attempt over another SMTP transport fails?
>>
>> As found under "fallback" in the concept index, there
>> are suitable options available on both routers and the
>> smtp transport.
>
> As far as I understand it, this concerns the *destination* address.
> It does not allow changing the source address, at least not directly.

The interface option on an smtp transport is expanded.
If you make it depend on $host (or $host_address) does that
do what you want, in combination with the above fallback_hosts ?
--
Cheers,
Jeremy