Novell Doc: GroupWise 7 - Mapped/UNC Link: Outbound Transfer to the Internet Successful

4.3 Mapped/UNC Link: Outbound Transfer to the Internet Successful

This message flow diagram shows how outbound messages travel through the GroupWise directory structure to the Internet when there is a mapped/UNC link between the MTA and the Internet Agent and when the Internet Agent can communicate successfully with the Internet host to which the message is addressed.

Figure 4-3 Message Flow When the Mapped Link is Open

Table 4-3 Message Flow When the Mapped Link is Open Stages

Stage	Icon	Description
Sender		The user sends a message to recipients across the Internet by providing their Internet addresses. In this diagram, the access mode setting for the local post office is Client/Server Only.
Sender’s GroupWise Client		The GroupWise client communicates the message to the POA by way of TCP/IP.
POA for Sender’s Post Office		The POA receives the message from the GroupWise client and performs the following actions for the sender: Adds the message to the message database (msgnnn.db) assigned to the sender. Creates a pointer in the sender’s user database (userxxx.db) so the message appears in the sender’s mailbox as a sent item. Places attachments larger than 2 KB in one of the post_office\offiles\fd0-F6 subdirectories and creates pointers from the message to its attachments. (For database efficiency, messages and distribution lists larger than 2 KB are also handled as attachments.) Creates a copy of the message in the appropriate priority 0-7 subdirectory of the MTA input queue in the sender’s post office, in case the TCP/IP link to the MTA is currently closed.
POA for Sender’s Post Office		The POA then communicates the message to the MTA for the sender’s domain by way of TCP/IP, and deletes the copy in the MTA input queue because the TCP/IP transfer to the MTA was successful.
MTA for Sender’s Domain		The MTA for the sender’s domain receives the message and places it into the MTA “in progress” (gwinprog) queue.
MTA for Sender’s Domain		The MTA determines that the message must be sent out across the Internet. Because there is a mapped/UNC link between the MTA and the Internet Agent, the MTA places the message in its output queue in the Internet Agent’s gateway directory (domain\wpgate\gwia\wpcsout\gwid\0-7).
Internet Agent for Sender’s Domain		The Internet Agent scans its input queues according to the Idle Sleep Duration setting on the Gateway Time Settings page of the Internet Agent object in ConsoleOne. The Internet Agent picks up the file in binary-encrypted format from the wpcsout\gwid\0-7 directory and converts it. The Internet Agent encodes the message in MIME format with the appropriate encoding scheme. When the message file is built, the Internet Agent saves it with S as the first character of the filename and places the message file in the domain\wpgate\gwia\send directory for processing.
Internet Agent for Sender’s Domain		While the Internet Agent is processing the message file in the send directory, it changes the first character of the filename to P. When processing is completed, the Internet Agent sends the message to the destination host across the Internet.
Internet Agent for Sender’s Domain		If the Internet Agent receives a 250 OK SMTP reply code from the destination Internet host, it places a Transferred status message into the input queue of the MTA for the sender’s domain.
MTA for Sender’s Domain		Because of its mapped/UNC link with the Internet Agent, the MTA regularly scans its input queue in the Internet Agent’s gateway directory based on the Scan Cycle setting on the Agent Settings page of the MTA object in ConsoleOne. It picks up the Transferred status messages and transfers them to its “in progress“ (gwinprog) directory for processing.
MTA for Sender’s Domain		The MTA for the sender’s domain communicates the Transferred status messages to the POA for the sender’s post office by way of TCP/IP.
POA for Sender’s Post Office		The POA for the sender’s post office updates the sender’s message database (msgnnn.db) with the Transferred status information.
POA for Sender’s Post Office		The POA for the sender’s post office communicates the Transferred status to the sender’s GroupWise client by way of TCP/IP.
Sender		When the sender checks the sent items in his or her mailbox in the GroupWise client, the message displays the Transferred status because the Internet Agent was able to sent it successfully.