DOCUMENT:Q197723  23-APR-1999  [exchange]
TITLE   :XFOR: Understanding Message Flow for New GroupWise Connector
PRODUCT :Microsoft Exchange
PROD/VER:WINNT:5.5
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
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SUMMARY
=======

Prior to the new GroupWise connector (Web 3 C&M drop), basic messaging
between GroupWise users and Exchange Server users was accomplished using SMTP
or, in some cases, X.400. The new GroupWise connector will only support SMTP for
messaging. This article describes the basic messaging flow between both mail
systems.

MORE INFORMATION
================

Exchange Server to GroupWise
----------------------------

1. Exchange Server user composes mail, selects a GroupWise Custom Recipient (CR)
   from the global address list, then sends the mail.

2. The message transfer agent (MTA) routes it to the Internet Mail Service where
   it is delivered to the GroupWise SMTP agent. This step assumes that the
   Internet Mail Service is already configured with the new address type of
   GWISE.

3. The message is delivered using GroupWise's internal mechanism to the target
   recipient.

Additional note: The GroupWise custom recipient's SMTP proxy address is not the
standard Exchange Server-based proxy address. The SMTP address is based on the
configuration in the GroupWise connector, or pulled individually for each
GroupWise user if their SMTP addresses are different

GroupWise to Exchange Server
----------------------------

1. GroupWise user composes mail, selects an Exchange Server user as a recipient,
   and sends e-mail.

2. API Gateway takes the message and drops it in the API_OUT directory on the
   Novell server.

3. The GroupWise Router for Novell takes the message the from API_OUT and
   rewrites the headers before dropping the message in the API_IN, for example:
   Header of original mail message from GroupWise to Exchange Server found in
   API_OUT:

   From=
       WPD= BETA 5;
       WPPO= PETALING JAYA;
       WPU= efong;
       FUA= efong@grpwise.petaling.com;
       FN= Eddie;
       LN= Fong;
       S= Fong;
       G= Eddie; ;
   To=
       WPD= Exchange;
       WPPO= WasteLand;
       WPU= EvilE;
       WPPONUM= 1;
       WPUNUM= 1;
       FUA= EvilE@WasteLand.com;
       FN= Evil;
       LN= Eye;
       Dept=  ;
       TTL=  ;
       TEL=  ;
       FAX=  ;
       S= Eye;
       G= Evil;
     CDBA= 0001:0001; ;

   Header of modified mail message placed in API_IN:

   From=
       WPD= BETA 5;
       WPPO= PETALING JAYA;
       WPU= efong;
       ;
   To=
       WPD= Beta 5;
       WPPO= SMTP;
       WPU= "EvilE@WasteLand.com";
       ;

4. The API Gateway takes the message from API_IN, matches the alias "SMTP" as
   belonging to the GroupWise SMTP Agent, and hands it off accordingly. Note
   that the alias name was written by the GWROUTER program based on the
   configuration set in the GroupWise Connector.

5. The GroupWise SMTP agent then connects with the Internet Mail Service in
   Exchange Server to complete the delivery of the message back to Exchange
   Server.

Additional query words: messaging, SMTP, Exchange to Groupwise

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Keywords          :  
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : WINNT:5.5
Issue type        : kbinfo

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