XCON: Configuring X.400 Connector between Two Exchange Servers

• Microsoft Exchange Server, version 4.0

SUMMARY

The following checklist is intended as an aide in configuring X.400 connectivity between Microsoft Exchange Servers. This effort is not intended to replace observations on previously operational connections that may point to the actual problem, but rather, as a guide to succesful configuration of between Microsoft Exchange Message Transfer Agents (MTAs). The term 'server' refers to a Windows NT server that has Microsoft Exchange Server Enterprise Edition or Standard Edition with the X.400 connector installed.

MORE INFORMATION

1. Can each server can ping the IP address of the other? No - Resolve network issue. Yes - If you want to use the server name versus the ip address proceed

            to step 2, otherwise proceed to step 3.
   
   

2. If the server name will be used in lieu of the IP address of the target MTA, ping the server name. Note: DNS will support server name resolution or a lmhosts or hosts file may be used. The lmhosts and hosts files are located in the 'winntdir'\system32\drivers\etc directory. The form for a lmhosts file is ip address, tab, server name, tab, #PRE, and a tab followed by a #DOM:domain_name if the server is a domain controller. The format for a hosts file is IP address, a tab, and then the server name.

   Did the server name return an ip address? No - Resolve problem with name resolution. Yes - Proceed to step 3.

3. Have the administrator configuring a given MTA record the following information for the MTA to which they desire to connect.

   Remote Server name: This entry is not case sensitive and may not exceed 32 characters in length. This entry is the name of the NT server where the target Microsoft Exchange Server is installed.

   Remote MTA password: This entry is case sensitive and may not exceed a length of 64 characters. If the other MTA has a password, you must enter it here.

   For the simplest configuration, select the defaults, which is no password.

4. T selector: This value is optional. This value is specified on the Outgoing OSI address information of the Stack tab. The value cannot exceed 32 text characters (64 HEX characters). By default, Microsoft Exchange uses the value(s) specified in the Outgoing OSI address information for the value(s) in the Incoming OSI address information. If a T selector is used, it is critical that the value be an exact match with the corresponding value specified for the T selector on the target Microsoft Exchange Server. If the remote admin wants to specify a S selector and/or a P Selector, this should be done after successful messaging has been established. The T, S, and P selectors are supported between Microsoft Exchange Servers.

5. Use the Overide tab to specify the Local MTA and Password. The MTA

       will use the name of the NT server on which Microsoft Exchange
       Server is installed for the MTA name. If no incoming password is
       desired, use of the Override Tab is unnecessary. Using a password is
       redundant because the T selector provides adequate security.
   

6. Use the Connected Sites tab to configure the address space that will

       be associated with the target Microsoft Exchange Server. The Address
       Space tab should only be used on a Microsoft Exchange Server that
       connects to a foreign MTA.
   

       Start the Microsoft Exchange Administrator program and select the
       Configuration object. Highlight the Site Addressing object in the
       right-hand window and double-click it. Select the Routing tab and click
       Recalculate Routing. This ensures that the routing table for the Site
       reflects current changes.
   

7. The information on the Advanced tab of the X.400 Connector should not

       require modification.
   

8. Make a custom recipient on both Servers or send a message to a user on

       the foreign server using a 1-off address in the To: line.
   

[x400:c=us;a=attmail;p=organization;o=locale;s=lastname;g=firstname]

1. If the above test fails in either direction, highlight the Server

       object in the Microsoft Exchange Administrator program. With the
       Server object highlighted, open the File menu and select the Properties
       option. Select the Diagnostics Logging tab and increase the
        MSExchangeMTA X.400, Interoperablility, and APDU logging to Medium.
       This will result in increased logging to the Bf0.log, Ev0.log and
       Ap0.log in the MTADATA directory.
   

2. Repeat the send mail testing.