On Wed, 20 Mar 2024, Marco van Tol via Exim-users wrote:
> Hi there,
>
> I apologise if this has been handled before. I wasn’t sure what a quick path in the FAQ would be to the answer for this.
>
> I have a domain for which different local_parts need to be delivered to different SMTP servers.
> The decision depends on whether "host-a" accepts the local_part, and otherwise it needs to be our local SMTP server.
>
>
> This works great, as long as you have one recipient per connection.
>
> But, when I tested what happened with 2 “RCPT TO” commands in a single connection, one for host-a, and one for local, I found out the contents of the acl_m_hosta is persistent between “RCPT TO” calls.
>
> Digging a bit further into this I found out that the router finds the variable in a state where the last verify left it, and all addresses would be handled by the same router.
>
> My question is this:
> Is there an easy way to decide per recipient which router will be used, based on the results of a callout/verify?
> Or is there a different way to establish the same result?
You are not using routers the way they are intended.
The idea is that *for each* address, each router is tried in turn until
one of them accepts the message, or specifies that it should be bounced.
See the Exim Spec, section 3.8 - Processing an address for delivery.
That should get you most of what you need.
--
Andrew C. Aitchison Kendal, UK
andrew@???
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