Computer Accounts getting corrupted

Hi!
We have Windows 2008 R2 DCs. Our domain computer accounts are many times getting corrupted and showing error "The trust relationship between this computer and domain controller has failed". We have to disjoin and rejoin the pcs to domain to fix
it.
Any Suggestions?
Thanks.

I would agree with Manjunath, if you just clone the machine you end up with the exact same SID and when you add multiple machines with this same sid the latest joined machine will alter the name and password of the sid and the old machines will lose the
ability to particpate in the domain. So unfortuantely, if this is the case you need to go back and get each cloned machine corrected or this will continue to occur.
Paul Bergson
MVP - Directory Services
MCITP: Enterprise Administrator
MCTS, MCT, MCSE, MCSA, Security, BS CSci
2012, 2008, Vista, 2003, 2000 (Early Achiever), NT4
Twitter @pbbergs http://blogs.dirteam.com/blogs/paulbergson
Please no e-mails, any questions should be posted in the NewsGroup.
This posting is provided AS IS with no warranties, and confers no rights.

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TERMSRV/SRV1
TERMSRV/srv1.mydomainname.com"
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dcdiag output
PS C:\Users\administrator.TOM> dcdiag.exe
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
***Error: DC3 is not a Directory Server. Must specify /s:<Directory Server> or /n:<Naming Context> or nothing to
use the local machine.
ERROR: Could not find home server.
PS C:\Users\administrator.TOM> dcdiag.exe /s:DC2
Directory Server Diagnosis
Performing initial setup:
* Identified AD Forest.
Done gathering initial info.
Doing initial required tests
Testing server: Default-First-Site\DC2
Starting test: Connectivity
The host 9e0dca7a-d017-445a-b354-adee5ff53d48._msdcs.TOM could not be resolved to an IP address. Check the DN
server, DHCP, server name, etc.
Neither the the server name (DC2.TOM) nor the Guid DNS name (9e0dca7a-d017-445a-b354-adee5ff53d48._msdcs.TOM)
could be resolved by DNS. Check that the server is up and is registered correctly with the DNS server.
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Doing primary tests
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Running partition tests on : ForestDnsZones
Starting test: CheckSDRefDom
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Starting test: CrossRefValidation
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Running partition tests on : DomainDnsZones
Starting test: CheckSDRefDom
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Starting test: CrossRefValidation
......................... DomainDnsZones passed test CrossRefValidation
Running partition tests on : Schema
Starting test: CheckSDRefDom
......................... Schema passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... Schema passed test CrossRefValidation
Running partition tests on : Configuration
Starting test: CheckSDRefDom
......................... Configuration passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... Configuration passed test CrossRefValidation
Running partition tests on : TOM
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Starting test: CrossRefValidation
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+ netdig /fix
+ ~~~~~~
+ CategoryInfo : ObjectNotFound: (netdig:String) [], CommandNotFoundException
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At line:1 char:1
+ Setup /PrepareSchema
+ ~~~~~
+ CategoryInfo : ObjectNotFound: (Setup:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
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netdiag : The term 'netdiag' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ netdiag /test
+ ~~~~~~~
+ CategoryInfo : ObjectNotFound: (netdiag:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
PS C:\Users\administrator.TOM> nslooup
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Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ nslooup
+ ~~~~~~~
+ CategoryInfo : ObjectNotFound: (nslooup:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
PS C:\Users\administrator.TOM>

Ok fixed.
At a elevated cmd prompt run ;
C:\Users\administrator.TOM>setspn -x
As you can see the DC serv1 had duplicate SPNs.
Checking domain DC=TOM
Processing entry 1
HOST/serv1.TOM is registered on these accounts:
CN=SERV1,OU=Domain Controllers,DC=TOM
CN=C00049,CN=Computers,DC=TOM
{14E52635-0A95-4a5c-BDB1-E0D0C703B6C8}/TOWN-HBWJ29ZOQC is registered on these ac
counts:
CN=Administrator,CN=Users,DC=TOM
CN=TOWN-HBWJ29ZOQC,CN=Computers,DC=TOM
{14E52635-0A95-4a5c-BDB1-E0D0C703B6C8}/town-hbwj29zoqc.TOM is registered on thes
e accounts:
CN=Administrator,CN=Users,DC=TOM
CN=TOWN-HBWJ29ZOQC,CN=Computers,DC=TOM
RestrictedKrbHost/serv1 is registered on these accounts:
CN=C00049,CN=Computers,DC=TOM
CN=SERV1,OU=Domain Controllers,DC=TOM
RestrictedKrbHost/serv1.TOM is registered on these accounts:
CN=C00049,CN=Computers,DC=TOM
CN=SERV1,OU=Domain Controllers,DC=TOM
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Computer Accounts getting corrupted

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