We do not have problem to receive email. However, when we send out email. Outlook client prompt out this error. The email still able to send out. But it store in 'Outbox' folder.
There is some signification different between 2010 Outlook and 2013 Outlook setting.
Below is the Office 2010: There are extra Sent Items, Deleted Items, Connection Tab.
Below is Outlook 2013.
So the error message is due to the server or due to outlook 2013? Please advice. We need the Sent Items share among all the email clients.
Thanks!