SYMPTOMS
When you try to send and receive e-mail, you may receive an error message that is similar to one of the following:

No connection could be made because the target machine actively refused it.

The server could not be found. (Account:account name, POPserver:’mail’, Error Number: 0×800ccc0d)

Task ’server name - Sending and Receiving’ reported error (0×800ccc0f): ‘The connection [...]