Microsoft KB Archive/99857

= SMTP: Err Msg: ERROR Write: (1) (null) =

Article ID: 99857

Article Last Modified on 10/30/2006

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APPLIES TO


 * Microsoft Mail Gateway to SMTP 2.1
 * Microsoft Mail Gateway to SMTP 3.0

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This article was previously published under Q99857



SYMPTOMS
Versions 2.1 and 3.0 of Microsoft Mail Gateway to SMTP may display this error message:

&quot;ERROR write: (1) (null)&quot;

This error message indicates that the SMTP Gateway was unable to send packets to the SMTP router configured in the Admin program. It should be configured in this manner:

Gateway-SMTP-SETUP:

IP address of SMTP Router



CAUSE
This error message may appear if:
 * The SMTP router goes down.
 * The network between the SMTP gateway computer and the SMTP router is down.
 * A problem occurs in the TCP/IP on the gateway computer.



RESOLUTION
You can test these trouble points by trying to &quot;telnet&quot; to port 25 of the smarthost. Once this test is successful, the gateway will run. Send the message again. If the error occurs frequently, check the network with a protocol analyzer for problems.

Additional query words: 2.10 3.00 errmsg alert

Keywords: KB99857

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