OK, since this is the second time that I have attempted the install, and the second time that I am having this problem, I am hoping that someone can help. I am installing 2k7 into an existing 2k3 infrastructure. One 2k3 server on the root domain, and one on the child domain. The child server is the one being updated. i get through all of the install except for the mailbox role. errors out with an RUS error. I have verified that setup /pl, setup /prepareschema, and setup /preparead have run correctly. My server shows up in the 'Exchange Install Domain Servers' group. So i am not sure how to fix the issue with RUS I will attach the relevant portion of the log below. What is wrong? How can I fix it? Haven't found too much help on the web yet. [7/16/2007 2:21:01 PM] [2] Service 'MSExchangeSA' has successfully reached status 'Running on this server while waiting for status change.[7/16/2007 2:21:01 PM] [2] Ending processing.[7/16/2007 2:21:01 PM] [1] Executing 'if ($RoleCreatePublicFolderDatabase) { new-publicfolderdatabase -StorageGroupRoleFqdnOrName"\Second Storage Group" -NameRolePublicFolderDatabaseName -DomainController $RoleDomainController }', handleError = False[7/16/2007 2:21:01 PM] [2] Launching sub-task '$error.Clear(); if ($RoleCreatePublicFolderDatabase) { new-publicfolderdatabase -StorageGroupRoleFqdnOrName"\Second Storage Group" -NameRolePublicFolderDatabaseName -DomainController $RoleDomainController }'.[7/16/2007 2:21:01 PM] [2] Beginning processing.[7/16/2007 2:21:01 PM] [2] Administrator Active Directory session settings are: View Entire Forest: 'True', Configuration Domain Controller: 'txdc.ad-tx.com', Preferred Global Catalog: 'txdc.ad-tx.COM', Preferred Domain Controllers: '{ txdc.ad-tx.COM }'[7/16/2007 2:21:01 PM] [2] Searching objects "txmex.ad-tx.com\Second Storage Group" of type "StorageGroup" under the root "$null".[7/16/2007 2:21:01 PM] [2] Previous operation run on domain controller 'txdc.ad-tx.COM'.[7/16/2007 2:21:01 PM] [2] Searching objects "TXMEX" of type "Server" under the root "$null".[7/16/2007 2:21:02 PM] [2] Previous operation run on domain controller 'txdc.ad-tx.COM'.[7/16/2007 2:21:02 PM] [2] Searching objects of type "PublicFolderDatabase" with filter "$null", scope "SubTree" under the root "TXMEX".[7/16/2007 2:21:02 PM] [2] Searching objects of type "Database" with filter "$null", scope "SubTree" under the root "TXMEX".[7/16/2007 2:21:02 PM] [2] Searching objects of type "Database" with filter "$null", scope "SubTree" under the root "TXMEX\Second Storage Group".[7/16/2007 2:21:02 PM] [2] Previous operation run on domain controller 'txdc.ad-tx.COM'.[7/16/2007 2:21:02 PM] [2] Checking the existence of directory "C:\Program Files\Microsoft\Exchange Server\Mailbox\Second Storage Group\Public Folder Database.edb" on Server "TXMEX".[7/16/2007 2:21:02 PM] [2] Verifying that the EDB file path "C:\Program Files\Microsoft\Exchange Server\Mailbox\Second Storage Group\Public Folder Database.edb" on Server "TXMEX" has not been used by other databases.[7/16/2007 2:21:02 PM] [2] Checking the existence of file "C:\Program Files\Microsoft\Exchange Server\Mailbox\Second Storage Group\Public Folder Database.edb" on Server "TXMEX".[7/16/2007 2:21:02 PM] [2] Searching objects of type "PublicFolderDatabase" with filter "(FirstInstance Equal True)", scope "SubTree" under the root "$null".[7/16/2007 2:21:02 PM] [2] Previous operation run on domain controller 'txdc.ad-tx.COM'.[7/16/2007 2:21:02 PM] [2] Searching objects of type "PublicFolderTree" with filter "(PublicFolderTreeType Equal Mapi)", scope "SubTree" under the root "$null".[7/16/2007 2:21:02 PM] [2] Previous operation run on domain controller 'txdc.ad-tx.COM'.[7/16/2007 2:21:02 PM] [2] Calling Recipient Update Service to stamp some properties related to mail recipient for configurable object "TXMEX\Second Storage Group\Public Folder Database" of type "PublicFolderDatabase".[7/16/2007 2:21:03 PM] [2] [ERROR] Unexpected Error[7/16/2007 2:21:03 PM] [2] [ERROR] The Exchange server address list service failed to respond. This could be because of an address list or email address policy configuration error.[7/16/2007 2:21:03 PM] [2] Ending processing.[7/16/2007 2:21:03 PM] [1] The following 1 error(s) occurred during task execution:[7/16/2007 2:21:03 PM] [1] 0. ErrorRecord: The Exchange server address list service failed to respond. This could be because of an address list or email address policy configuration error.[7/16/2007 2:21:03 PM] [1] 0. ErrorRecord: Microsoft.Exchange.Data.Directory.RusServerUnavailableException: The Exchange server address list service failed to respond. This could be because of an address list or email address policy configuration error. at Microsoft.Exchange.Data.Directory.Recipient.RecipientUpdateService.LocateServer() at Microsoft.Exchange.Data.Directory.Recipient.RecipientUpdateService.Calculate(ADObject recipient, PolicyType[] policies, ADRecipientSession session) at Microsoft.Exchange.Management.SystemConfigurationTasks.NewPublicFolderDatabase.PrepareDataObject() at Microsoft.Exchange.Configuration.Tasks.SetTaskBase`1.InternalValidate()[7/16/2007 2:21:03 PM] [1] [ERROR] The Exchange server address list service failed to respond. This could be because of an address list or email address policy configuration error.[7/16/2007 2:21:03 PM] [1] Setup is halting task execution because of one or more errors in a critical task.[7/16/2007 2:21:03 PM] [1] Finished executing component tasks.[7/16/2007 2:21:03 PM] [1] Ending processing.[7/16/2007 2:22:02 PM] [0] End of Setup

Hi, This might help: http://groups.google.dk/group/microsoft.public.exchange.setup/browse_thread/thread/6532f057fc29f8ca/98512196e99418ac?lnk=st&q=%22The+Exchange+server+address+list+service+%22&rnum=6#98512196e99418ac Leif

Even after fixing your permission or receipient policy that you deleted, you need to REBOOT the exchange 2007 server The Exchange 2007 setup caches the problem and will continue to fail even after the issue is resolved

Did you prepare the Legacy Permissions? http://technet.microsoft.com/en-us/library/aa997914.aspx Deli