Hi all,
I have started encountering this issue with "emails stuck in outbox", while setting up a new exchange 2013 server in my exchange 2007 enviornment. I have moved a couple of test accounts to Exchange 2013.
When clients try to send emails they get stuck in the outbox with no errors either in, outlook, the client computer, or on the exchange server.
It happens for all clients that are inside the network, or using OWA the emails get stuck in drafts. The same users connecting from out on the intenet via rpc over http are ok. i.e, if I run outlook 2010 from a 2012 Terminal server inside the network I get the issue. If I start outlook 2013 and use rpc over https it seems ok.
Our domain uses company.local internally, but I have changed all URL's to use the external uri of "company.com" and have a public cert on all these services that match.
the clients that have the isuse do not open any other email accounts, and I have tried specifying DNS servers in the DNS settings for the new 2013 server.
As there are no error messages I have no idea how to start fault finding this.
Any ideas anyone?