Windows 2000 SP4 breaks SMTP

  • Thread starter Thread starter Justin Ball
  • Start date Start date
J

Justin Ball

We have several Windows 2000 servers that run ASP based applications.
Each of these applications uses the SMTP service provided by windows,
and each of these applications functioned correctly until our install
of Windows 2000 Service Pack 4. Now when the software attempts to
send email the following error appears in our event log:

Type: Warning
Source: smtpsvc
Category: None
EventID: 4000

Description:
Message deliver to the remote domain 'yahoo.com' failed for the
following reason: An internal DNS error caused a failure to find the
remote
server.

Data: (word) 0000: c00402e7


I assume that we need to perform some type of configuration to get the
SMTP service to work correctly. Note that the service still runs and
accepts requests to send email. However, it is incapable of actually
sending the email.

Has anyone experienced a similar problem and if so is there a way to
fix it?

Thanks,
Justin Ball
 
We contacting the administrator in charge of our nameservers and found
that they had blocked TCP request due to an attack. They re-enabled
TCP and our systems work fine now. I guess we can't blame everything
on Microsoft.

Thanks,
Justin
 
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