[exim] Bounce mail to another address (not to the original s…

Dear all,

I'd like Exim to send mail bounces not to the original sender, but to
another address.

As the wiki says, "When a message fails to be delivered, or remains on
the queue for more than a configured amount of time, Exim sends a
message to the original sender, or to an alternative configured
address."

However, I haven't found how to configure Exim to do that. Any tips?

Thanks in advance,

L.