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https://macmule.com/2012/11/09/idevice-mail-error-cannot-get-mail-the-connection-to-the-server-failed-the-operation-couldnt-be-completed-daerrordomain-error-111/
iDevice Mail Error: "Cannot Get Mail. The connection to the server failed" / "The operation couldn’t be completed. (DAErrorDomain error 111.)"