Communications tunneling

摘要

AS/400 POP3/MIME clients that are making use of the POP3 server support move mail through a SNADS network to other POP3 clients. The messages sent between these clients make use of an existing SNADS network without having to resort to converting or mapping or breaking apart an ASCII SMTP/MIME text message to an equivalent OfficeVision/400 format. Likewise, non-text SMTP/MIME messages or attachments sent this way do not need to be mapped to OfficeVision/400 PC file objects. This is accomplished by encapsulating the SMTP/MIME message in an AS/400 Object Distribution as a specific database object. Once encapsulated, the SMTP/MIME message is an object distribution message as far as any reference to that message made by any SNADS function anywhere in the SNADS network. When an encapsulated SMTP/MIME message reaches the destination system, the encapsulation is stripped away and the SMTP/MIME message handled and recognized as a delivery to a POP3 client by the SMTP/MIME and POP3 server support at that destination system. Optionally, the SMTP/MIME message can also be transformed into an OfficeVision/400 (OV) message at that destination system.