Contact Form in Enfold does not function properly

The contact form in Enfold does not function properly.Due to the fact that the form acts as if it is coming from the sender’s email address, emails from certain domains such as AOL, Yahoo, etc. do not come through to the administrator of the site. This never used to be a problem, but apparently AOL, Yahoo etc. tightened things up on their security and will not allow emails not originating from their servers to be sent on behalf of users on their domain. What is the fix for this. I have lost a lot of business because of emails I did not receive! There should be a way to have the for be coming from the domain of the website the form is on.

PLEASE HELP WITH THIS. THIS IS A MAJOR PROBLEM.