Hi, Marco -
I'm not too sure what you're asking… Is it about the *errors_to* option for
routers in Exim? If so, the documentation for errors_to in the
*Specification* shows it is expanded when it is used. That is, you can use
a string expansion expression with the option to choose what value you
should assign it based on other things.
So you can write a string expansion that does whatever you need — for
example, test the domain of the recipient address to see whether they are
one of your local users or not, then do either a file- or LDAP-lookup to
see if there is a value to be sued for them.
If you're instead asking about rewriting the RFC5321.MailFrom,
RFC5322.{From, Reply-to, Sender} headers using the Address Rewriting
section then you can also use string expansions in the replacement value of
rules there so can do the same thing there.
Cheers,
Mike B-)
On 17 March 2017 at 11:45, Marco Gaiarin <gaio@???> wrote:
>
> Supposing to have aliases (strictling speaking: a LDAP query, but also a
> file, is irrilevant) that have as destination local and remote addresses
> (clearly, not only one of them: mixed up).
>
> There's some way to rewrite sender, setting 'errors_to = ', based on the
> recipient address, eg only for nonlocal recipient?
>
>
> Thanks.
>
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