title: PTR records support on azure
body: <p>We are currently working on project which allow users to create their own sites. Users are able to bind their own domain to site created in our system. One of our feature is support email for users domains. So we need email service 
  which will be able to host a lot of domains. We created such service but when we send emails from our service receiver service put them to spam folder (such behaviour was detected at least for gmail and yahooo). 
  As we know you have problems with support of PTR records. Is it possible to set it up to send requests for DNS REVERS LOOKUP (requests for getting PTR records) to our service (we also have our own DNS service)?</p>
  
  <p>Thanks!</p>