DOCUMENT:Q260167 10-NOV-2000 [exchange] TITLE :XCON: MTA Stops Communicating with Other MTAs in the Same Site PRODUCT :Microsoft Exchange PROD/VER:winnt:5.5 OPER/SYS: KEYWORDS:exc55 kbExchange550preSP4fix kbExchange550sp4Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== The Exchange Server message transfer agent (MTA) may stop communicating with other MTAs on servers in the same site. CAUSE ===== This issue can occur if the MTA experiences a large number of connection failures over an extended period of time and loses connection resources that are necessary to connect to other MTAs in the site. RESOLUTION ========== To resolve this problem, obtain the latest service pack for Exchange Server 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 WORKAROUND ========== To work around this issue, restart the MTA to reset any connection resources and enable the MTA to communicate with other MTAs in the same site. STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Exchange version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4. MORE INFORMATION ================ This issue does not cause any loss of communication between servers in different sites by using any connector (Site, X.400, SMTP, and so on). Additional query words: ====================================================================== Keywords : exc55 kbExchange550preSP4fix kbExchange550sp4Fix 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 2000.