XFOR: Message Flow through the SNADS Connector (215493)

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Message Flow from Exchange Server to SNADS

1. Message is passed by the Exchange Server information store to the connector's MTS-OUT folder if on same Exchange Server computer. Otherwise, the message transfer agent (MTA) routes it to the Exchange Server computer where the SNADS Connector is installed, and places it in the connector's MTS-OUT folder.
2. The SNADS Connector picks up the message from MTS-OUT, looks up the directory entries for the recipients, and places the message in the READYOUT folder.
   
   NOTE: Specifically, the process Lsmexout.exe, listed in Exchange Connectivity Administrator's Process Manager as "Transfer from Exchange for SNADS," or "LME-SNADS-MEXOUT," is responsible for the above action. In the Queues tab of the Notes Connector Property page, MTS-OUT is called "Outbound from Exchange," and READYOUT is called "Outbound to SNADS."
3. The SNADS connector receives the message from the MTS-OUT folder and puts it into the READYOUT folder.
4. The SNADS connector then translates it into an intermediary GML structure (similar to DIA), breaks out the attachments into separate messages, and places the message header(s) (one for the body, one for each attachment) into the Exchsrvr\Connect\Exchconn\Q\Snads.in.in as a file with the extension .rdy, and places the message body (*.tmp) and attachments (*.att) into separate files in the Exchsrvr\Connect\Exchconn\Q\Objects directory.
   
   NOTE: Specifically, the process Lsmexdia.exe, listed in Exchange Connectivity Administrator's Process Manager as "Exchange to SNADS Transform," or "LME-SNADS-MEXDIA," is responsible for the above action.
5. The SNADS Connector then picks up the *.rdy file (and associated files), and sends a SNADS distribution to the SNADS-compliant partner mail system over an LU 6.2 session. When the partner mail system indicates that it has received the distribution, the SNADS Connector removes the *.rdy file and associated files.
   
   NOTE: Specifically, the process Lssne.exe, listed in Exchange Connectivity Administrator's Process Manager as "Outbound SNADS Server," or "LME-SNADS-OUT," is responsible for the above action.

Message Flow from SNADS to Exchange Server

1. The SNADS Connector listens to receive an incoming allocate from the partner mail system, receives a SNADS distribution over an LU 6.2 session, and generates a file in the Exchsrvr\Connect\Exchconn\Q\Dia2mex.in directory (extension *.rdy) containing the message header, and generates a file in Exchsrvr\Connect\Exchconn\Q\Objects directory (extension *.snd) containing the message body (or document/binary file).
   
   NOTE: Specifically, the process Lssne.exe, listed in Exchange Connectivity Administrator's Process Manager as "Inbound SNADS Server," or "LME-SNADS-IN," is responsible for the above action.
2. The SNADS Connector picks up the *.rdy file (and associated files) from the Exchsrvr\Connect\Exchconn\Q\Dia2mex.in directory, translates the message into Microsoft internal format, and puts the message in the READYIN folder.
   
   NOTE: Specifically, the process Lsdiamex.exe, listed in Exchange Connectivity Administrator's Process Manager as "SNADS to Exchange Transform," or "LME-SNADS-DIAMEX," is responsible for the above action.
3. The SNADS Connector then verifies the validity of the recipients, and puts the message into the MTS-IN folder.