I actually figured it out. If I place an email address in the from, it works. I suppose that PHP mail() requires an email address here. Here is what I did:
// Set up Email Parameters
$from = $_POST['email'];
$subject = "Condolence";
// To send HTML mail, set the Content-type header. */
$headers = 'MIME-Version: 1.0' . "\r\n" .
'Content-type: text/html; charset=iso-8859-1' . "\r\n" .
/* additional headers */
//$headers .= "To: Michael <diehlfhi@aol.com>, Tara <tmv105@gmail.com>\r\n";
'To: Tara <tmv105@gmail.com>' . "\r\n" .
//'From: condolence@deihl.com' . "\r\n" .
'From:'. $from . "\r\n" .
'Cc: greatfultobe@yahoo.com' . "\r\n" .
'Bcc: talong@netscape.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
// Send Email
mail($to,$subject,$message,$headers);
Both ways work...either hard coding an email into the "From" or filling the value in from a variable set from data on my form.
Thought that I would give an attempt of an explanation to any who might wanna know. :)