We have a new server with Server 2012 and Exchange 2013. We are in the testing phase and is not behaving as we expect. It's been awhile since we've done this. The last time was Server 2003 and Exchange 2003. So far we've installed Server 2012 R2 and promoted it to a domain controller. We've installed Exchange 2013. Every thing seems to have gone smoothly. There are two workstations. Each workstation is a member of the domain. There are two domain user accounts, userA and userB. Each workstation is logged on to the domain with each of there user accounts. Outlook on each workstation has been successfully configured to connect to and use the new Exchange server. We have not yet configured the Exchange Server to send and receive messages from the outside world. We plan to this eventually but for now we just want to send email between local users. AT this time we expect messages sent between userA and userB to arrive in each others mailboxes but that is not happening. The messages act like they are being sent but they never arrive in the users email boxes. Any ideas on what might be going on? Thanks.