
Hello, I need you to open rDNS for me, port 25. I need to use them to build my mail server. Thank you very much.

Seems like this should be handled by our Technical Support team, would you be able to open up a ticket at https://app.cloudcone.com/support/list, so our Support team can assist you better and help you out :)
Also, please try to include all necessary info, so the team will understand your issue in one go and help you faster.
