To use the Exchange Management Console to determine which objects require upgrading, you must edit the object by using the Edit wizard for that object.

For example, if you want to determine whether an e-mail address policy has been upgraded, you select the e-mail address policy from the result pane and then, in the action pane, click Edit to open the Edit E-Mail Address Policy wizard. If the e-mail address policy was created in Exchange 2003 and the filtering syntax has not yet been upgraded to OPATH, the following error is displayed.

This error signifies that the filtering syntax of the e-mail address policy was created in Exchange 2003 or earlier and may require upgrading. For information about how to upgrade the filtering syntax, see "Upgrading Default Objects" and "Upgrading Custom Objects" later in this topic.

To use the Exchange Management Shell to determine which objects require upgrading, you can use the associated Get- cmdlet and format the list to view the recipient filters and the version of Exchange.

For example, to determine which e-mail address polices require upgrading, run the following command:

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Get-EmailAddressPolicy | Format-List Name, *RecipientFilter*, ExchangeVersion

After you run this command, the following information is displayed in the Exchange Management Shell.

In this example, two e-mail address policies were returned by the Get-EmailAddressPolicy cmdlet. Default Policy, which is highlighted in blue, is an Exchange 2003 object that requires upgrading. Resource Mailboxes, which is highlighted in red, was either created in Exchange 2007 or has already been upgraded.

If you can answer "Yes" to any of the following questions, the object has not been upgraded:

• Is the RecipientFilter attribute empty?
  
  
• Does the value of the RecipientFilterType attribute equal "Legacy"?
  
  
• Does the value of the ExchangeVersion attribute equal "0.0 (6.5.6200.0)"?
  
  

To upgrade an Exchange 2003 LDAP filter to the Exchange 2007 OPATH syntax, you must first determine what the LDAP filter is filtering. Perform the following steps:

1. Copy an existing filter into a text editing application, such as Notepad.
   
   

   Important:
   Before you begin, document your existing LDAP filter.

   The following is an example of an LDAP filter for an e-mail address policy:
   
   

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   (&(&(|(&(&(objectCategory=user)(msExchangeHomeServerName=/o=ORG/ou=SITE/cn=Configuration/cn=Servers/cn*)))(&(|(objectCategory=group)(objectCategory=msExchangeDynamicDistributionList))(displayName=IT*)))))

2. In Notepad, indent the lines of the filter to see the logical flow (as illustrated in the following figure).
   
   
   
3. Write a statement that explains what the filter does. In this example, the e-mail address policy's filter includes the following objects:
   
   
   • All user category objects that have a home server in a particular administrative group
     
     
   • All groups or dynamic distribution lists that begin with a specific display name
     
     

After you determine the function of the LDAP filter, you must translate the LDAP filter into the OPATH syntax.

Note:
In Exchange 2007, the names for many properties have changed. For example, the LDAP property "mailNickname" is called "Alias" in Exchange 2007. To view a complete list of the property names, see the following topics:

• Filterable Properties for the -RecipientFilter Parameter in Exchange 2007 RTM
  
  
• Filterable Properties for the -RecipientFilter Parameter in Exchange 2007 SP1 and SP2
  
  

Create the recipient filter based on the statements you recorded in Step 3 of the section "Determine What the Custom LDAP Filter Does" earlier in this topic.

1. (ServerLegacyDN -like "/o=ORG/ou=SITE/cn=Configuration/cn=Servers/cn=*")
   
   
2. ((RecipientType -eq "<group recipient type>" -or RecipientType -eq "DynamicDistributionGroup") -and (DisplayName -like "IT"))
   
   

• Finally, construct the command by using the appropriate Set cmdlet, and then run the command in the Exchange Management Shell.
  
  

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Set-EmailAddressPolicy eap1 -RecipientFilter {(ServerLegacyDN -like "/o=ORG/ou=SITE/cn=Configuration/cn=Servers/cn=*") -and ((RecipientType -eq "<group recipient type>" -or RecipientType -eq "DynamicDistributionGroup") -and (DisplayName -like "IT"))}

Note:
Many of the properties for the -RecipientFilter parameter accept wildcard characters. If you use a wildcard character, do not use the -eq operator. Instead, use the -like operator. The -like operator is used to find pattern matches in strings, whereas the -eq operator is used to find an exact match.