DOCUMENT:Q198772 12-MAY-1999 [exchange] TITLE :XFOR: Configuring Transport Selectors with Exchange 5.5 SP1 PRODUCT :Microsoft Exchange PROD/VER:winnt:4.0,5.0,5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 ------------------------------------------------------------------------------- SUMMARY ======= The X.400 transport selectors are found in three configuration fields in the Exchange Server Administrator program: A. Stack T-Selector: 1. Expand on Site, then Configuration, then Servers, and select the Server object. 2. In the right pane you will find a protocol stack in the form of TCP (servername), for example, TCP(Server1). B. Outgoing T-Selector: 1. Expand on Site, then Configuration, then Connectors. 2. In the right pane, select your X.400 Connector. You will find a Stack property page with both an Outgoing and Incoming section for the transport values. C. Incoming T-Selector: 1. Expand on Site, then Configuration, then Connectors. 2. In the right pane, select your X.400 Connector. You will find a Stack property page with both an Outgoing and Incoming section for these values. MORE INFORMATION ================ The usage of these three fields (A, B, and C) has been changed in the Exchange Server 5.5 Service Pack 1 (SP1) message transfer agent (MTA) to allow multiple links of the same transport type between two MTAs. In particular, the C field is never read by the latest Exchange Server 5.5 SP1 MTA. When configuring links for an Exchange Server 5.5 SP1 MTA to another Exchange Server 5.5 SP1 MTA, only the B field is required to match on both sides. The settings of the A and C fields make no difference when Exchange Server 5.5 SP1 MTA connects to another Exchange Server 5.5 SP1 MTA. When configuring links between Exchange Server 5.5 SP1 MTA to an earlier version of Exchange Server (and for our discussion, we will assume the other MTA is in Exchange Server 5.0), then the following rules apply: - The Exchange Server 5.0 B field must match the Exchange Server 5.5 SP1 B field. - If the Exchange Server 5.0 C field is configured, then the Exchange Server 5.0 C field must match the Exchange Server 5.5 A field. If the Exchange Server 5.0 C field is not configured, then the Exchange Server 5.0 B field must match the Exchange Server 5.5 A field. When the Exchange Server 5.5 SP1 MTA connects to a non-Exchange Server MTA with 5.5 SP1: - A must match the value configured in the foreign MTA for the Exchange Server T-Selector. - B must match the value configured in the foreign MTA for its own local T-Selector. For completeness, when configuring an Exchange Server 5.0 MTA to an Exchange Server 5.0 MTA: - The local A field must match the remote B field (or remote C field, if configured). - If the local C field is not configured, then the local B field must match the remote A field. - If the local C field is configured, then the local C field must match the remote A field. ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2 Version : winnt:4.0,5.0,5.5 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.