Hi, i'm working on a simple mail list app in PHP using Zend Mail. The idea is that all mail that bounce is redirected to a script which processes them and a report is generated. The script is running ok in direct tests, but I've testing it with fake mail address to test the mail list app, and it appears that the mail is not being redirected to the correct email address. Zend Mail provides the setReturnPath method to set the "Return-Path" header, it's ok to use this header for this purpose? Thanks