DOCUMENT:Q184185 09-APR-1999 [exchange] TITLE :XFOR: Older Versions of Exchange Server Cannot Send ETRN Command PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:5.0,5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 5.0, 5.5 ------------------------------------------------------------------------------- SUMMARY ======= The ETRN command is supported in Microsoft Exchange Server 5.0 Service Pack 1 and later. It is also supported in Exchange Server 5.5. If you are unable to receive Simple Mail Transfer Protocol (SMTP) messages using the ETRN command, apply the latest Exchange Server 5.0 service pack or upgrade to Exchange Server 5.5. MORE INFORMATION ================ The ETRN command is an Extended SMTP (ESMTP) command that causes an ESMTP host to send messages to a particular domain. When an Exchange Server computer sends the ETRN command to an ESMTP host, the host sends any messages that are waiting to be sent to recipients in the specified domain. Older versions of Exchange Server cannot send the ETRN command. ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange500 kbExchange550 kbZNotKeyword2 Version : WINDOWS: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.