[Exim] correct email addr to send bounces

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Dear list:

We run a webserver with lots applications ran by different departments.
Some of this apps send mails to it's users and frecuently those mails
have errors (unexistant email addresses, etc).

We would like to add the corresponding mail headers so the bounced
emails go to the correct person. We've tried by adding the following
headers:

Sender: msarsale@???
X-Sender: <msarsale@???>
Return-Path: <msarsale@???>
Errors-To: <msarsale@???>
From: <msarsale@???>

Also, 'www-data' (the user apache uses) is on the trusted_users list.

Then, we try to send a message to a nonexistant user on a remote
mailserver but the user "msarsale@???" doesn't gets the
bounced message.

Thanks in advance




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