iDevice Mail Error: “Cannot Get Mail. The connection to the server failed” / “The operation couldn’t be completed. (DAErrorDomain error 111.)”

Standard

Infrequently we’ve been seeing the  below error on some iDevices after enrolling into our MDM solution.

“Cannot Get Mail. The connection to the server failed”

Plugging those devices into a computer running iPhone Configuration Utility would reveal the following errors in the logs.

“The operation couldn’t be completed. (DAErrorDomain error 111.)”

Realising we had maybe a more Exchange side issue, we looked at the logs on the Exchange Server we were connecting to.. these logs contained the following errors:

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