DOCUMENT:Q123827  05-NOV-1999  [pcmail]
TITLE   :SMTP: Err Msg: Error (119) Network Write Error
PRODUCT :Microsoft Mail For PC Networks
PROD/VER:MS-DOS:2.1,3.x
OPER/SYS:
KEYWORDS:

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Mail Gateway to SMTP, versions 2.1, 3.x 
-------------------------------------------------------------------------------

SYMPTOMS
========

Microsoft Mail Gateway to SMTP may display this message:

   Error (119) Network Write Error,

CAUSE
=====

This error message appears if:

 - An error at the TCP or IP layer has occurred.

 - The other host has gone down.

 - The network between the gateway computer and the other host has gone down.

 - The other host may require that the PUSH flag be sent to push the SMTP packet
   up to the SMTP software, instead of remaining in the incoming buffer.

RESOLUTION
==========

You can test these possible causes by attempting to telnet to port 25 of the
smarthost and resending the message. This can usually be done by pressing
SPACEBAR and typing "25" (without the quotation marks) after the IP address on
the telnet command line.

If the error message appears frequently, check the network with a protocol
analyzer to determine the exact problem.

NOTE: Mail sent to IBM TCP/IP version 2, Release 2 may result in this error
message if the PUSH flag is not set. FTPs pc/TCP automatically sets the PUSH
flag for outgoing packets.

For Microsoft LAN Manager TCP/IP, ensure you are using the 2.2b version of the
file TCPTSR.EXE. By default, TCPTSR.EXE is found in
\LANMAN.DOS\DRIVERS\PROTOCOL\TCPIP. The 2.2b version of TCPTSR.EXE is dated
2/1/94 and is 42716 bytes. Then, add the parameter ForcePushBit=1 to the [TCPIP]
section of the PROTOCOL.INI file. It defaults to 0, but when it is set to 1, it
causes the PUSH bit to be set on every outgoing packet.

Additional query words: 2.10 3.00 ERRMSG smart host push flag

======================================================================
Keywords          :  
Technology        : kbMailSearch kbMailGateSearch kbZNotKeyword3 kbMailGateSMTP3xSearch kbMailGateSMTP210
Version           : MS-DOS:2.1,3.x

=============================================================================

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.