exchange 2010, active directory

we are getting lot of errors on various DC SERVERS.
1.      LDAP query taking too long
2.      High LDAP Search Time detected. Sustained for 2 minutes - Yellow(>100 milliseconds).
 3.    One or more Objects properties are pointing to Active Directory deleted objects
4.     Exchange Control Panel connectivity transactional failures

Incidents counts are more than 15 for each

is there any solution
pramod1Asked:
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LeoCommented:
What does the event viewer log says? can you paste them here...
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Seth SimmonsSr. Systems AdministratorCommented:
are the exchange servers and domain controllers geographically dispersed?
do you have AD sites and services configured correctly?
if there are domain controllers being access over the wan by exchange, the latency could account for the messages that things are taking too long.  exchange should have a fast connection to domain controllers
should also check that there is a global catalog in the same site as exchange
should help with the first 2 issues and possibly the 4th
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pramod1Author Commented:
yes you are correct .The exchange servers and domain controllers geographically dispersed?
 do you have AD sites and services configured correctly?
 if there are domain controllers being access over the wan by exchange, the latency could account for the messages that things are taking too long.  

1) what kind of fast connection you are referring.
2) I am attaching the error logs, kindly have a look and let me know the real cause.
exchange-control-TRANSACTION-FAILURE.txt
failed-messages.txt
one-or-more-objects-pointing-to-deleted.
LDAP.txt
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Seth SimmonsSr. Systems AdministratorCommented:
are they on the same physical network?
is the cas server short on system resources?
did you look into the technet article cited in the transaction failure output?

for the 2 user objects, did you read the technet article cited in the message?
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pramod1Author Commented:
yes these are on different subnets , cas server is not short on system resources

I have given my answer bit I have to share this answer with my director

can you review the attachment and help me improve if you find any discrepancy.

thanks
ERRORS.txt
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pramod1Author Commented:
will you be able to answer, I have to submit shortly
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pramod1Author Commented:
can anybody help
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pramod1Author Commented:
I've requested that this question be deleted for the following reason:

I need to rephrase my question as I didn't put it correctly
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Seth SimmonsSr. Systems AdministratorCommented:
some of your solutions look good though recommend putting a domain controller on the same network segment as your exchange server; that should help a lot
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