[Exim] Return-Path:

Hello,

I am new to exim. I am running debian stable, which has exim-3.35. I
have a small app written in php which is using exim as smtp to send emails.

How do I configure exim so it uses from email address as Return-Path
Apache is running as www-data so currently Return-Path in all emails is
coming as www-data@<domain-name>

Please help.

Res