I have a server that is the main domain controller that has exchange on it. i didn't realize it but it has .local set up versus .com for the domain name. I believe that since the company owns a .com for a website that they have hosted else where that it wouldnt be a problem.
Right now the users email addresses are listed as firstname.lastname@example.org. This is due to the fact that the server is listed as companyname.local how can this be changed without having to reinstall everything on the server?