note 50553 rejected from ref.mail by didou

Note Submitter: rclm48 at hotmail dot com ---- Does the Return-Path make any difference which contributes to mail being send to JUNK MAIL at the recipient email folder? $to: recipient email (inputted from form) such as $email; $from: $sendername <sender email>; $Return-Path: $sendername <sender email>; I realised that when I specify my Return-Path in my php coding, it doesn't overwrite the message source which was handles by my Hosting Company Web Server (such as httpd@email.com.sg). How can I check whether will this cause any issues? Please advise. I am already out of my wit now as I have tried many ways. Thanks ALOT!