public static Domain GetDomain(this DomainManagerClient client, MailAddress address)
        {
            if (address == null)
            {
                throw new ArgumentNullException("address");
            }

            return(client.GetDomain(address.Host));
        }
 public static Domain GetDomain(this DomainManagerClient client, string domainName)
 {
     return(client.GetDomain(domainName, null));
 }
        public static bool DomainExists(this DomainManagerClient client, string domainName)
        {
            Domain domain = client.GetDomain(domainName);

            return(domain != null);
        }