RE: [Exim] autoreply with changed sender

>
> I'd like to use "mail" command in Exim filter and change the default
> sender for this bouce message. I can't use empty '<>' sender
> in one case.
> I think "pipe" command wouldn't be the best method because
> bounced message
> doesn't contain any element of original mail. What can I do?

You could try to use the return_path option
in the autoreply transport you use with the exim filter.

HTH,

Florian