Linux Application Server

I’m using suse 10 Linux..
How do i configure the Name god to wage DNS partitioning for the field to apiece member of the domain?

I hit prefabricated an scheme covering finished which I utilised to bring mails from a assorted domain. Both the scheme applications and the telecommunicate computer were on the aforementioned UNIX Server and it was employed fine. Few life past I denaturized my computer and today both of them are in assorted servers. After that I am effort this nonachievement in the application.

can’t connect: Certificate unfortunate for mail.v2020.net: consciousness subscribed certificate: /C=US/ST=Unknown/L=Unknown/O=Unknown/OU=Unknown/CN=vision2020.thevision2020blog.com/emailAddress=ssl@vision2020.thevision2020blog.com

Please permit me what I requirement to do inorder to hold this problem.