Re: [Exim] changing from exim3 to exim4

Phil Chambers wrote:
> I have a large exim3 config file which took a lot of effort to develop when I moved
> over to using exim 12 months ago. I intend to move to exim4 as soon as possible.
> However, e-mail is an absolutely essential service and we operate on the principle
> of doing everything possible to prevent any disruption to that service. It follows
> that it is going to be a real problem changing over. Testing the exim4 config is
> very difficult because I can't just put it up and see what happens.
>
> I have been running through a lot of "exim -C newconfig -d -bt" tests to see that I
> get the same as before and have noticed a difference. I have a router (used to be a
> director) which does a data = <lookup username for this local_part> and has no_more
> set. For non-existent local_parts the no_more made it skip to the end of the
> directors and fail with 'unknown local-part "xxxxx" in domain "ex.ac.uk"'. With
> exim4 I now get 'Unroutable address' as the failure. If this means that the
> end-user is going to get a non-delivery report with that explanation then I am not
> at all happy. The latter message is very misleading because I would expect people
> to interpret it as unroutable in networking terms, which is not the problem at all.
>
> How do I get back to the 'unknown local_part' type of failure?

i'm not sure, but you could try

data = ${lookup {$local_part} lsearch {FILE}{$value}{:fail: unknown
local-part "$local_part"}}

you need to add allow_fail to the router, to make this work.

ciao