SMTP: Err Msg: ERROR Connect: (121) Network Error
ID: Q99852
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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 one
of the following messages:
ERROR connect: (121) network error
-or-
ERROR connection to smart host failed
-or-
NC_incoming: unavailable
These errors indicate that the SMTP Gateway cannot connect to the SMTP
router, also called the smarthost, which you can configure in the
Administrator program under Gateway, SMTP, Setup, as follows:
IP address of SMTP Router: XXX.XXX.XXX.XXX
CAUSE
The error occurs if:
- The smarthost is down.
- The smarthost is not configured to answer SMTP calls.
- The network between the SMTP gateway computer and the smarthost is
down.
- The TCP/IP configuration on the gateway computer is incorrect.
RESOLUTION
You can test for the above conditions by trying to "telnet" to port 25
of the SMTP router: type the number 25 after the IP address of your
SMTP router. If this test succeeds, the gateway will run. If it fails,
you have to bring the host or network back up, or make configuration
changes as needed.
The telnet process may differ with software. Consult the telnet
documentation for a particular port connection procedure.
Additional query words:
2.10 3.00 errmsg admin
Keywords :
Version : MS-DOS:2.1,3.0
Platform : MS-DOS
Issue type :