DOCUMENT:Q99855 29-OCT-1999 [pcmail] TITLE :SMTP: Err Msg: 503 Bad Command Sequence PRODUCT :Microsoft Mail For PC Networks PROD/VER:MS-DOS:2.1,3.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Mail Gateway to SMTP, versions 2.1, 3.0 ------------------------------------------------------------------------------- SYMPTOMS ======== Versions 2.1 and 3.0 of Microsoft Mail Gateway to SMTP may display this error message: "503 Bad command sequence" CAUSE ===== This error message indicates that an SMTP command was received out of sequence. After sending this error message to the calling host, the SMTP Gateway waits for another command. RESOLUTION ========== Check the SMTPGATE.LOG file to find the offending command that caused the error. Then, contact the sending host to determine why the command was given. Additional query words: 2.10 3.00 alert errmsg ====================================================================== Keywords : Technology : kbMailSearch kbMailGateSearch kbZNotKeyword3 kbMailGateSMTP300 kbMailGateSMTP210 Version : MS-DOS:2.1,3.0 ============================================================================= 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.