Error code: ssl_error_internal_error_alert
If you are receiving the following error:
An error occurred during a connection to img.yugster.com:443.
Peer reports it experienced an internal error.
(Error code: ssl_error_internal_error_alert)
This is most likely due to the server using a security protocol that Postbox does not support.
Our developers are aware of the issue, and we currently await a solution.
In the meantime, we strongly suggest that you disable remote HTML images by going to Options | Preferences / Privacy and enable the option for: Block loading of remote images in mail messages.