Email cannot be received for the mailbox {0} because a server certificate required to connect to the email server couldnot ...

Email cannot be received for the mailbox {0} because a server certificate required to connect to the email server couldnot be validated or the credentials used to receive email are incorrect or do not have permission. Mailbox {0} didn't synchronize. A notification about this is posted on the alerts wall for the owner of the email server profile {1}.