Slow Relay between Exchange 2007 and Exchange 2010

Problem is Shadow Redundancy feature on Exchange 2010.

Exchange 2010 Receive Connector has a MaxAcknowledgementDelay setting, which default to 30 seconds.

To disable this, use the command below;

 Set-ReceiveConnector "Your Connector Name" -MaxAcknowledgementDelay 0
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Exchange 2010 sends attachments as winmail.dat

From EMC on Hub Transport Server open

Organization configuration - Hub Transport - Remote Domains - Double Click default - message format tab - Exchange Rich Format to Never Use
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An Active Manager operation failed. Error: The database action failed. Error:

An Active Manager operation failed. Error: The database action failed. Error:
  Operation failed with message: MapiExceptionNotFound: Unable to mount
  database.


If you have a multiple(trusted ) domains in your forest you can see this error while mounting new database on Exchange Server.

To solve this issue yould indicate your preferred server by using the command below in EMS.

Set-ADServerSettings –PreferredServer DCFQDNName

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The Active Directory Schema is not up-to-date and Ldifde.exe is not installed on this computer

Before deploying new Exchange Organization you must first install the Active Directory management tools on the Windows Server 2008 before preparing the schema or domains:

To do this, run the following command: ServerManagerCmd -i RSAT-ADDS

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Thursday, April 16, 2009530 5.7.1 Client was not authenticated Exchange 2010

After new installation of Exchange 2010, you will be able to sent mail out of to your domain but not able to receive emails from internet.

To solve this issue you should give permission to anonymous user on Default Receive Connector.
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