Email not sending

I am using version 7.8.3 of suitecrm. I can send emails directly to contacts, and can send test emails. When creating a newsletter or email campaign, I note that when I fill in the from name and email address in the form, and then go to the next stage in the flow, I receive an error that I have not entered the required fields for from name and address. I reenter the same values, and then the form is taken. But, I note that when emails are created, it appears the from address is not populated. Emails are not sent out from the server.