if the email can be sent to one address but will be sent to another address, this points to a problem on the SMTP server. For some reason the SMTP server is not relaying email to the other address. You will need to contact you host to see if they can look into the SMTOP server error logs to see what the problem is.
To send two c completely emails, you will need to apply two instances of the universal email server behavior. Just make sure not to set a redirect on the forst universal email instance.