means that the email server or something between FairEmail and the email server actively terminated an existing connection.
This can for example happen when connectivity was abruptly lost. A typical example is turning on flight mode.
The error *... BYE Logging out ...*, *... Connection reset by peer ...*or *... Broken pipe ...*means that the email server actively terminated an existing connection.
The errors*... BYE Logging out ...*, *... Connection reset by peer ...* mean that the email server actively terminated an existing connection.
The error *... Connection closed by peer ...* might be caused by a not updated Exchange server,
see [here](https://blogs.technet.microsoft.com/pki/2010/09/30/sha2-and-windows/) for more information.
The errors *... Read error ...*, *... Write error ...*, *... Read timed out ...* mean that the email server is not responding anymore or that the internet connection is bad.
The errors *... Read error ...*, *... Write error ...*, *... Read timed out ...*, *... Broken pipe ...* mean that the email server is not responding anymore or that the internet connection is bad.
The error *... Unexpected end of zlib input stream ...* means that not all data was received, possibly due to a bad or interrupted connection.