User can’t send email after changing NLB mode on CAS/HUB server

Filed Under (Exchange 2007, Exchange 2010, Microsoft) by Tariq Jaber on 23-12-2010

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If you have two Network Load Balanced Exchange servers with the Hub transport and Client Access server roles installed on both of them, and you changed the NLB mode from multicast to unicast, you may not be able to send messages even if the messages are moved from the outbox folder to the Sent Item folder with the following error:

Task Microsoft Exchange Server' reported error (0x8004010F): 'The operation failed. An object could not be found 

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Last week readings

Filed Under (Readings) by Tariq Jaber on 11-12-2010

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How Hyper-V snapshots work
http://searchservervirtualization.techtarget.com/tip/0,289483,sid94_gci1361103_mem1,00.html

Selecting storage hardware for a virtual deployment
http://searchservervirtualization.techtarget.com/tip/0,289483,sid94_gci1352449_mem1,00.html

Hyper-V R2 Live Migration
http://www.simple-talk.com/sysadmin/virtualization/hyper-v-r2-live-migration/

Virtual Exchange Servers
http://www.simple-talk.com/sysadmin/virtualization/virtual-exchange-servers/

Exchange Database Technologies
http://www.simple-talk.com/sysadmin/exchange/exchange-database-technologies/

How to migrate Microsoft ISA Server 2006 to Microsoft Forefront TMG
http://www.isaserver.org/tutorials/How-migrate-Microsoft-ISA-Server-2006-Microsoft-Forefront-TMG.html

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