SMTP: Err Msg: ERROR Network_Read: Lost Network Connection
ID: Q102107
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The information in this article applies to:
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Microsoft Mail Gateway to SMTP, version 3.0
SUMMARY
When a connection begins for the Microsoft Mail Gateway to SMTP, the first
thing that occurs is a greeting exchange between the TCP/IP host and the
SMTP gateway computer. RFC 822 specifies that these greeting replies
include host names. However, the SMTP gateway does not include the host
names in its greeting replies. Most hosts ignore this particular piece of
the 822 RFC.
When communicating with an IBM VM host running IBM VM SMTP V2R2, an error
may occur because IBM VM requires that the host name be included. As a
result, the gateway log file, SMTPGATE.LOG, will record the following error
message:
ERROR Network_read: Lost network connection
STATUS
Microsoft has confirmed this to be problem in version 3.0 of Microsoft Mail
Gateway to SMTP. This problem was corrected in version 3.0.1 of
SMTPGATE.EXE. If you do not have version 3.0.1 (or later), you can obtain
the latest version from the Microsoft Software Library (MSL). Download
SMTPGW.EXE (S14223), a self-extracting file, from any of the following
services:
- Microsoft's World Wide Web Site on the Internet
On the www.microsoft.com home page, click the Support icon.
Click Knowledge Base, and select the product.
Enter kbfile SMTPGW.EXE, and click GO!
Open the article, and click the button to download the file.
- Internet (anonymous FTP)
ftp ftp.microsoft.com
Change to the Softlib/Mslfiles folder.
Get SMTPGW.EXE
- The Microsoft Network
On the Edit menu, click Go To, and then click Other Location.
Type mssupport.
Double-click the MS Software Library icon.
Find the appropriate product area.
Locate and Download SMTPGW.EXE.
For additional information about downloading, please see the following
article in the Microsoft Knowledge Base:
Q119591 How to Obtain Microsoft Support Files from Online Services
MORE INFORMATION
The following is an example of what happens when you connect to the IBM VM
host with a telnet session on port 25:
$ telnet 128.227.212.10 25
Trying...
Connected to 128.227.212.10.
Escape character is '^]'.
220 yourhost.yourdomain.com running IBM VM SMTP V2R2 on Fri,
19 Mar 93
12:19:29 EST
HELO
501 Syntax Error. Domain name missing
helo myhost.mydomain.com
250 yourhost.yourdomain.com is my domain name.
quit
221 yourhost.yourdomain.com IBM VM SMTP V2R2 closing
connection
Connection closed by foreign host.
Additional query words:
3.00
Keywords : MailGWSMTP
Version : MS-DOS:3.0
Platform : MS-DOS
Issue type :