We are doing a migration from Exchange 2003 to Exchange 2010 the organization has approximately 6,000 mailboxes
When Setup starts the Exchange CAS, presented the following problem:
Error:
The DNS domain name is invalid. It contains characters other than 'A'-'Z', 'a'-'z', '0'-'9', '.' and '-'.
Domain Name:client_pr.br
Is there some solution to this problem other than is renaming
the domain?