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Managing mail with MMDF

Channel programs

For each channel, MMDF provides two programs: an input program associated with incoming mail, and an output program associated with outgoing mail. For example, the UUCP channel has /usr/bin/rmail as its input program and /usr/mmdf/chans/uucp as its output program.

On the MMDF system, the server is a channel program that monitors the network for incoming mail. On systems other than MMDF, the function of a mail server is built into the mail delivery system. The relationship between a channel and server is shown here in the following graphic.

Channel and server relationship

Even if MMDF is only being run on one side, the other side, while not correctly called a channel program, performs the same function.


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SCO OpenServer Release 5.0.7 -- 11 February 2003