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 cannot communicate successfully with the Internet host to which the message is addressed.
Figure 4-4 Message Flow When the Mapped Link is Closed
Table 4-4 Message Flow When the Mapped Link is Closed Stages
Stage |
Icon |
Description |
---|---|---|
Sender |
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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 |
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The GroupWise client communicates the message to the POA by way of TCP/IP. |
POA for Sender’s Post Office |
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The POA receives the message from the GroupWise client and performs the following actions for the sender:
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POA for Sender’s Post Office |
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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 |
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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 |
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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 |
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The Internet Agent scans its input queues according to the 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 |
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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 |
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If the Internet Agent does not receive a 250 OK SMTP reply code from the destination Internet host, the Internet Agent renames the P*.* message file back to S*.* and creates a file named R*.* that records the SMTP reply codes (error messages) in the wpgate\gwia\result directory. After the Internet Agent completes the communication with the destination host, it moves the S*.* message file from the send directory to the result directory along with the corresponding R*.* file. |
Internet Agent for Sender’s Domain |
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The Internet Agent analyzes the files in the result directory, comparing the SMTP reply codes in the R*.* file. If the R*.* file has a temporary transmission error (meaning it has a 400-level SMTP reply code such as 450 Host Down), the Internet Agent moves the S*.* message file to the defer directory. Continue with Stage If the R*.* file has a fatal error (meaning it has a 500-level SMTP reply code such as 550 Host Unknown), the Internet Agent deletes the S*.* file because it is undeliverable. Skip to Stage |
Internet Agent for Sender’s Domain |
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Based on the setting on the SMTP/MIME Settings property page of the Internet Agent object in ConsoleOne, the Internet Agent requeues the S *.* message file back into the send directory for reprocessing. |
Internet Agent for Sender’s Domain |
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After an S*.* message receives 400-level SMTP reply codes until the setting is reached, or if a message receives 500-level SMTP reply codes, the Internet Agent deletes all related schedule files from the defer directory because the message is undeliverable. The Internet Agent then creates an Undeliverable status message for the MTA to pick up and return to the sender. |
MTA for Sender’s Domain |
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Because of its mapped/UNC link with the Internet Agent, the MTA scans its input queue in the Internet Agent’s gateway directory based on the setting on the Agent Settings page of the MTA object in ConsoleOne. The MTA picks up the Undeliverable status messages and transfers them to its “in progress“ (gwinprog) directory for processing. |
MTA for Sender’s Domain |
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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 |
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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 |
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The POA for the sender’s post office communicates the Transferred status to the sender’s GroupWise client by way of TCP/IP. |
Sender |
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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 send it successfully. |