This error means your device cannot connect to your provider’s mail server . It can be anything from no network, intermittent or unstable network, or even a good internet connection in general but inability to reach your specific provider’s mail server.
Read moreWhat is HTTP server used for?
An HTTP server is software that understands URLs (web addresses) and HTTP (the protocol your browser uses to view webpages) . An HTTP server can be accessed through the domain names of the websites it stores, and it delivers the content of these hosted websites to the end user’s device.
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