I downloaded the newsletter plugin about a month ago. I just noticed that people who have hotmail email addresses ar not receiving any emails.
What should I do, to solve this problem. PLEASE HELP AS SOON AS POSSIBLE!
If only hotmail is refusing your email it means your server if probably black listed by hotmail. Ask your provider to check that and to configure an SPF record on your DNS to declare the seding server is allowed. Their tech support should fully understand the request.