I have Exchange 2003 server. Email addresses are firstname.lastname@example.org.
I have another UNIX SMTP server 192.168.1.1 that is used by an application.
We have a department that uses this application that sends emails to a couple thousand users internal and external using "RnD@test.com" as the reply to address.
So users internally/externally are getting the emails from RnD@test.com going to their JUNK EMAIL FOLDERS. Or SPAM folders if you use YAHOO.
Even if they are all as safesenders to outlook it doesn't work.
I know it has something to do with the UNIX server sending the email as a spoofed Exchange Address.
So how do i prevent this email address from being sent as a SPAM or to JUNK EMAIL ?