DOCUMENT:Q249898 06-JAN-2000 [exchange] TITLE :XADM: MTA Queue Full When Directory Replication Set to Always PRODUCT :Microsoft Exchange PROD/VER:winnt:5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== When you connect multiple sites with site connectors and then schedule directory replication to occur 'Always', you may find that messages fill the message transfer agent (MTA) queue. In addition, the process utilization on the connected Exchange Server computers may reach close to 100 percent, but you receive no error messages and Event Viewer shows no relevant events. CAUSE ===== This behavior can occur when the Exchange Server computers already regularly receive heavy message loads, and constant directory replication then increases the stress on the connectors and servers. RESOLUTION ========== To resolve this behavior, set a staggered replication schedule for the connectors on each Exchange Server computer where the queue is full: 1. In the Administrator program, open the Directory Replication object, and then click the Schedule tab. 2. Click Never to set the replication schedule for the connectors, and then click OK. 3. Restart the Exchange Server computer. 4. Monitor the work queue. When the queue falls to zero and process utilization drops, reschedule directory replication so it occurs at staggered times. Additional query words: ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : winnt:5.5 Issue type : kbprb ============================================================================= 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.