@jess
Both of the follwoing instances work sending mail on all systems I have installed.
Now, on one system I see in the '/var/log/maillog' logs that it is trying to send mail from my main host using my top level domain but is getting a user does not exist error. Is there a way to set Kaltura to us STMP authentication for specific user to send mail? If so how to I set this up?
Now, the other system I am positive that is a rDNS, PTR and DomainKey configuration issue because that host nor the DNS used to point the QDN to the system was setup nor managed by me. The logs show error 550 rejections and errors.