HP 3000 Manuals

Managing HP X.400 Administrator's Guide

Component and Queue Relationships 

The following is a list of the components and their relationship to the
queues.  Figure 2-1 shows these relationships.

   1.  The MTA 
       reads ASN.1 PDUs from the Input Queue (IQ) 
       and writes ASN.1 PDUs to the Output Queues (OQs) 
       .

   2.  The RTS 
       reads ASN.1 PDUs from OQs, and writes ASN.1 PDUs to the IQ.

   3.  If you are using X.400 with HP Desk, 
       the encoder 
       reads IFFs from encoder input queues (EIQs) 
       , encodes them into ASN.1 PDUs, and writes them to the IQ.

   4.  If you are using X.400 with HP Desk, 
       the decoder 
       reads the ASN.1 PDUs from OQs assigned to HP X.400/HP Desk Nodes,
       decodes them into IFFs, and writes them in the corresponding
       decoder output queue (DOQ) 
       .

   5.  If you are using X.400 with HP Desk, 
       the x4xfer 
       transfers IFFs from an HP X.400/HP Desk Node DOQ to the HP
       X.400/HP Desk Node.

   6.  If you are using X.400 with elm or mailx, 
       x4mailer receives RFC822 formatted messages from Sendmail, encodes
       them into ASN.1 PDU files, and writes them to the IQ. It also
       reads ASN.1 PDU files from OQ253, decodes them into RFC822
       formatted messages, and passes them to Sendmail.

The trace queue (TQ), 
if enabled, is an archive of all MHS messages that pass through the MTA.
The UQ 
archives messages which cannot be parsed by the MTA, decoder, encoder,
x4mailer, HP OpenMail/X.400 interface, or HP X.400 High-Level API.

The following figure illustrates the queues and their relationship to
system 
components.


          Figure 2-1.  HP X.400 Queues and Components 

MPE/iX 5.0 Documentation