DOCUMENT:Q96244  28-OCT-1999  [pcmail]
TITLE   :SMTP: Err Msg: Socket Error (123) When Starting Gateway
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
========

Immediately after starting the Microsoft Mail Gateway to SMTP, this message
appears on the PC that runs the SMTP gateway:

   socket error (123)

CAUSE
=====

The gateway reports this error under one of the following conditions:

 - TCP/IP is not running when the gateway is started.

 - TCP/IP from the appropriate vendor is not running when the gateway is
   started. At installation, the gateway is configured specifically for one of
   five vendor's TCP/IP (LAN Manager TCP/IP and Novell Lan Workplace for DOS are
   the only versions of TCP/IP version 3.0 supports).

   For example, if the gateway is configured for FTP pc/TCP, and the gateway PC
   runs LAN Manager TCP/IP, the error occurs when the gateway attempts to detect
   the FTP software and does not find it.

 - SOCKET.EXE is not started when LAN Manager is used. SOCKET is provided with
   Microsoft LAN Manager for MS-DOS.

RESOLUTION
==========

These resolutions correspond to the causes above:

 - Start TCP/IP before running the gateway software.

 - Reconfigure the gateway to match the TCP/IP stack actually in use. Copy the
   appropriate executable file from the Microsoft Mail Gateway to SMTP disk to
   the directory that contains Microsoft Mail. Change the name of the gateway
   file to SMTPGATE.EXE. The table below lists the appropriate files:

      Executable    TCP/IP Software Vendor
      --------------------------------------------------------------------

      SMTPLMN.EXE   Microsoft LAN Manager for MS-DOS

      SMTPFTP.EXE   PC/TCP Kernel from FTP Software, Inc.

      SMTPNVL.EXE   Novell LAN WorkPlace for DOS (version 4.0)

      SMTPWIN.EXE   Excelan EXOS 205T Intelligent Ethernet Controller with
                    LAN WorkPlace Network Software (version 3.4)

      SMTPXLN.EXE   WIN/TCP for DOS RunTime (version 4.1) from The
                    Wollongong Group, Inc.

   For example, if you are using Microsoft LAN Manager, use a command like the
   following to copy the SMTPLMN.EXE file into the directory that contains the
   Microsoft Mail file as SMTPGATE.EXE:

   " copy a:\smtplmn.exe n:\mailexe\smtpgate.exe " (without the quotation marks)

 - The LAN Manager TCP/IP stack does not automatically load all sockets with the
   LOAD TCPIP command. The SOCKETS command runs SOCKTSR.EXE to load the SMTP
   socket required by the gateway. When you use LAN Manager TCP/IP, execute the
   LOAD TCPIP and SOCKETS commands before starting the gateway.

Additional query words: 2.10 3.00 Lan Error

======================================================================
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.