We have an Exch 2010 server running and want to get IMAP working for smartphone users as well as external Outlook users. Will purchase a SSL Cert so, we can use Activesync in the future. Outlook is working fine with IMAP and smartphones can receive mail, but outgoing is not working.
Was hoping to setup with authentication but when I configure the phone to require sign-in it says the server does not support authentication. Will accept without authentication however will not send. Using port 587 as configured in the Client Receive Connector.
Exchange server "Client Receive Connector" has everything checked under Authentication except:
Mutual Domain Security