Hi everybody,
I am using Outlook 2013 connecting an Exchange 2013 server. After sending a mail, all outgoing mails remain in the outbox. After removing the cache files it works for a while until the problem occurs for the next time (approx. once every two days).
I already re-installed Windows 8 to test it on a completely clean environment...OWA works fine, the problem only exists with Outlook.
Additional note: It might be interesting that after sending a mail, the "Send/Receive progress" window states "sending xy@xy.de - complete" but the Mail is still in the outbox and was not delivered to the recipient. Safe mode doesn't work for me. Other users connecting with Outlook 2010 don't have a problem with this exchange server.
Do you have any ideas? If I can provide you with further information, please let me know.
Greets,
Basti