I have the simplest setup possible in a test network with 2 fresh VMs - one DC, one member server (both 2008 R2). I have finally jumped through all of the hoops required to get Exchange Server 2013 installed on the member server and have created 2 mailboxes, but they are unable to send emails to each other through OWA because the messages just sit in the drafts folder.
Googled it and found loads of people have this issue but that it is almost always because of DNS issues. I have checked the DNS settings on the server in the exchange web management page and they were correct already but I tried changing to Custom and specifying the DC as the DNS server, restarting the Exchange server, but still no joy.
Where do I go from here? Can't find any obvious log files or event log entries that help at all.
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