When trying to setup the Workflow Mailer you might get this above error. It basically means that you are connecting to the mail server but not necessarily to the IMAP server. You need to ask your Mail Admin to give you the IMAP server and not the normal mail server. Also make sure that the account has IMAP access as this may be turned off by default
Working my way through the dba day to day activities sharing what I learn along the way. Mostly a place to save my own notes for later use and hopefully someone else might find it useful.