GMS was in the process of accepting a message from a remote server when the remote server suddenly broke the connection. This is often seen where large messages are sent over slow connections (e.g. 10MB over a 48Kbit modem). If the remote server supports RESTART, then when the remote server starts to send the message again it will only send the additional portion of the message rather than the whole message again.
In this case, session Undefined was receiving a message from Undefined when the connection was broken. More information is contained in the error code – Undefined is the operating system error code.
This is not a problem with Gordano software. Usually, the remote server will connect again and restart or continue to send the message at a later date. However, if this error is occuring due to a large message over a slow connection, RESTART is essential to ensure efficient and eventual delivery of the message so it may be beneficial to contact the owner of Undefined and suggest they upgrade to a server that supports the ESMTP option RESTART.
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Keywords:Restart disconnect retry checkpoint RFC1845 8131