Using classic Outlook for Windows in business environments
There are a number of server names that are being phased out in favor of the standard ones that I included which have been in effect for quite a while
As for your screenshot - where is this from? More importantly, is there a reason you are using IMAP instead of Exchange (the default)? Am assuming this is because you're using a 3rd party email client that does not support the Exchange protocol
Have no idea as to why you can receive emails, but the Sent Items folder is asking you to log into the account. Something is missing from this description. Just to confirm, that isn't the server name you used for the SMPT server -- correct?