Adaptive Email Transmission Route Selection for Reliable MDN Confirmation
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Solution Overview
Problem
Current email communication systems that transmit image data without a mail server face challenges in confirming successful data reception, as Message Disposition Notification (MDN) transmission is unreliable without a mail server, leading to potential failures in image formation due to storage capacity exhaustion or other issues, and the load on mail servers increases with large image files.
Innovation Solution
A communication system that adaptively selects the transmission route for email confirmation by using either a mail server or a direct method without one, allowing for reliable transmittal confirmation by generating and transmitting email with a reply method indication, and receiving and processing confirmation results based on the selected method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If image data is transmitted without intervention of a mail server, then the load on mail server is reduced and communication speed is improved, but the reliability of MDN transmission is worsened because the reception device cannot determine whether the MDN transmission destination permits direct transmission
Solution Approach 1:
The invention performs preliminary action by having the transmission device send transmission confirmation request information along with the image data before MDN transmission. This allows the reception device to know in advance whether to transmit MDN directly or via mail server, eliminating the reliability problem while maintaining direct transmission benefits
Solution Approach 2:
The invention introduces transmission confirmation request information as an intermediary element that mediates between the transmission device and reception device. This intermediary carries the necessary instructions for MDN transmission routing, enabling reliable direct transmission without requiring a mail server
2Reliability
If a mail server is used for MDN transmission, then the reliability of confirmation is improved, but the device complexity and operational difficulty increase
Solution Approach 1:
The invention extracts the essential confirmation function from the mail server infrastructure. By using direct transmission with embedded transmission confirmation request information, the system achieves reliable confirmation without requiring the complex mail server infrastructure, thus reducing device complexity while maintaining reliability
3Productivity
If image data is transmitted directly without mail server, then communication efficiency is improved, but the ability to confirm successful reception is worsened
Solution Approach 1:
The invention implements feedback by incorporating transmission confirmation request information in the outgoing data and expecting a transmission confirmation result in return. This feedback loop ensures that the transmission device receives confirmation of successful reception, preventing information loss while maintaining direct transmission efficiency
Data Source
AI summary
A transmission apparatus transmits e-mail to a reception apparatus through a network by selecting one of a communication method via a mail server and a communication method without intervention of a mail server. This transmission apparatus generates the e-mail and transmits, to the reception apparatus, the e-mail and information representing the reply method of a transmittal confirmation request in response to the e-mail. The transmission apparatus receives, from the reception apparatus in accordance with the reply method, a transmittal confirmation result in response to the transmitted e-mail.