DOCUMENT:Q196665 30-SEP-1999 [exchange] TITLE :XCON: MTA Could Route Messages Through Higher Costing Routes PRODUCT :Microsoft Exchange PROD/VER:WinNT:5.5 OPER/SYS: KEYWORDS:exc55 EXC55SP3Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== The Microsoft Exchange Server message transfer agent (MTA) can send a message through higher costing route when multiple connectors are available. CAUSE ===== The MTA uses the final route in a list if retry timers are equal when choosing routes across multiple gateways. In the customer-specific case, the higher costing gateway happened to be lower in the list of currently active in the "connect retry state" than the least costing one. RESOLUTION ========== To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the Microsoft Knowledge Base: Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack The English version of this fix should have the following file attributes or later: Component: Message Transfer Agent (MTA) File Name Version ------------------------- Dbserver.sch 5.5.2500.0 Dcprods.cat 5.5.2500.0 Ems_rid.dll 5.5.2500.0 Emsmta.exe 5.5.2500.0 Info4log.cfg 5.5.2500.0 Infodlog.cfg 5.5.2500.0 Infollog.cfg 5.5.2500.0 Infotlog.cfg 5.5.2500.0 Mtacheck.exe 5.5.2500.0 Mtamsg.dll 5.5.2500.0 P2.xv2 5.5.2500.0 X400om.dll 5.5.2500.0 X400omv1.dll 5.5.2500.0 STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3. ====================================================================== Keywords : exc55 EXC55SP3Fix Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : WinNT:5.5 Issue type : kbbug Solution Type : kbfix ============================================================================= 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.