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
[email protected]
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