hi what is the max number of new accepted domains that can be created in exchange server2007?

There is no theoretical limit for accepted domains, but since the system stores all domains in memory, please increase 1GB RAM / 1,000 domains Please use the latest exchange 2007 SP3, as the previous version has certain issue, like: Mobile devices cannot send e-mail by using the AirSync feature in an Exchange Server 2007 organization that has more than 1000 accepted domainsJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com