We are trying to shift our corporate email server from our ISP to the rackspace cloud. Looks like who ever used the IP (that my virtual server was assigned) before has abused it for sending a lot of spam. Now none of the major free email providers - gmail,yahoo, hotmail etc are accepting mails from this IP as it is on their block list.
Any suggestions for getting that IP address off that list as we now want to use it for legit mail server.
thanks Pari