debian ispconfig specialist. detect why not possible to send receive mails

Please check my profile to see my work history and reviews.I had completed 55 projects with 100% completion rate.I had experience in similar job. I was away for a year from the freelancer and recently started working again. Please feel free to discuss. I am ready to start right away I need payment only after completing the task . No need for initial payments. Only thing you need to create the mile stone . Thanks