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What does this Critical error in system log mean and should I be worried?

This is the first and only time I've ever seen this problem. There are no computers on this network named 'aliant'. The only dcom protocols according to the registry is ncacn_ip_tcp. I do  not know what this means.

Critical Errors in System Log

Source             Event ID           Last Occurrence                   Total Occurrences
DCOM               10009              10/20/2011 10:06 AM                       1

DCOM was unable to communicate with the computer aliant using any of the configured protocols.  

Any information would be greatly appreciated!
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JohnnyBCJ
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JohnnyBCJ
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Rob WilliamsCommented:
Is this SBS 2003 as you have tagged or 2008/2011? If the later it is not critical and a known issue. Please see:
http://blogs.technet.com/b/sbs/archive/2008/08/26/known-post-installation-event-errors-in-sbs-2008-and-how-to-resolve-them.aspx
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Rob WilliamsCommented:
ps- Are you east coast Canada? If so it could be a mobile device that was connected to your server via wireless and is no longer?
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JohnnyBCJAuthor Commented:
This is SBS 2003. Nothing is connected to the server wirelessly.

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JohnnyBCJAuthor Commented:
RobWill:
ps- Are you east coast Canada? If so it could be a mobile device that was connected to your server via wireless and is no longer?



Why would my location in Canada have anything to do with this?
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Rob WilliamsCommented:
If it is an infrequent error or there is no "Aliant" device on the network you can safely ignore it. It most often is caused by random network blocks between server and device, or firewalls. It can also be caused by some 3rd party software such as HP, Brother , and Cisco.
You may want to review the following, but I wouldn't be concerned.:
http://www.eventid.net/display.asp?eventid=10009&eventno=579&source=DCOM&phase=1

The more disconcerting issue to me is what is the "Aliant" device that at some point was on your network.
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Rob WilliamsCommented:
>>"Why would my location in Canada have anything to do with this? "
Aliant is an east coast Canada service provider of different sorts. Their devices, either a mobile device or an on-site technician's computer, could be named Aliant.
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JohnnyBCJAuthor Commented:
I thought Aliant covered all of Canada.

This is the 1st and only time I've ever seen this error. I agree, it's disturbing me that I do not know what this 'aliant' device is. Do you know of anything I can check to figure out what it is or was?

It's obvious that is was either A) connected to the server or B) attempted to connect to the server?
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Rob WilliamsCommented:
I thought Aliant was Atlantic Canada only, but couldn't swear to that. It's actaully Bell now.
The device must have been connected to the network at some point, and I would think it had to have been part of the domain. If a hacker I am doubtful their computer would have that name, just not something typical. HAve you looked through Active Directory? You might try pinging that name but chances are it is not present, or disconnected as per the DCOm error. Did any of the points in the EventID link ring any bells such as software by 3rd parties?
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Rob WilliamsCommented:
The following may help to diagnose:
http://support.microsoft.com/kb/910695
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JohnnyBCJAuthor Commented:
There is nothing in active directory with the name aliant. I've never seen this error or anything like it before.

When attempting to ping aliant, I get the error:
"Ping request could not find host aliant. Please check the name and try again."

I'll try that link and I'll get back to you as soon as I can.
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