Exchange 2013 installation fails

Question

We're in the process of migrating from Exchange 2007 to Exchange 2013.  I've followed the prerequisites, and have the necessary account permissions, but when I start the installation it fails at step 1 of 5 (mailbox role:mailbox service).
This warning shows up in the application log:
Event ID 2397
Process ExSetupUI.exe (PID=9844). Object [CN=Mailbox Database 1783948598,CN=Databases,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=<domain>,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=<domain>,DC=local]. Property [Server] is set to value [<Exchange 2013 server name>
DEL:492ae292-f89f-4a29-b009-22a60973a4bf], it is pointing to the Deleted Objects container in Active Directory. This property should be fixed as soon as possible.
This error shows up in the Exchange install console, as well as the application log:
Event ID 1002
Exchange Server component Mailbox role: Mailbox service failed.
Error: Error:
The following error was generated when "$error.Clear();
if (($RoleIsDatacenter -ne $true) -and ($RoleIsDatacenterDedicated -ne $true))
if (test-ExchangeServersWriteAccess -DomainController $RoleDomainController -ErrorAction SilentlyContinue)
# upgrade the discovery mailboxes to R5 version, this will fix the RecipientDisplayType property of the discovery mailbox which was wrong in R4.
get-mailbox -RecipientTypeDetails DiscoveryMailbox -DomainController $RoleDomainController | where {$_.IsValid -eq $false} | set-mailbox -DomainController $RoleDomainController
$name = [Microsoft.Exchange.Management.RecipientTasks.EnableMailbox]::DiscoveryMailboxUniqueName;
$dispname = [Microsoft.Exchange.Management.RecipientTasks.EnableMailbox]::DiscoveryMailboxDisplayName;
$mbxs = @( get-mailbox -Filter {name -eq $name} -IgnoreDefaultScope -resultSize 1 );
if ( $mbxs.length -eq 0)
$dbs = @(get-MailboxDatabase -Server:$RoleFqdnOrName -DomainController $RoleDomainController);
if($dbs.Length -ne 0)
$mbxUser = @(get-user -Filter {name -eq $name} -IgnoreDefaultScope -ResultSize 1);
if ($mbxUser.Length -ne 0)
enable-mailbox -Discovery -identity $mbxUser[0] -DisplayName $dispname -database $dbs[0].Identity;
else
write-exchangesetuplog -info "Skipping creating Discovery Search Mailbox because of insufficient permission."
" was run: "The Exchange server for the database object "Mailbox Database 1783948598" wasn't found in Active Directory Domain Services. The object may be corrupted.".
I should also mention that this installation was attempted once before by an ex-coworker, and it failed.  I've spent hours searching Google but haven't come up with a solution.  Does anyone have any ideas?

Answer 1

Check it at Exchange 2007 side, Get-MailboxDatabase -Server E2007ServerName or via EMC to confirm but if msExchOwningServer/msExchMasterServer
points to the server which is stale 2013 server then it shouldn't be connected to E2007 by any way and you are good to remove those...
But I wouldn't touch another DB which has just server name and not servername\0ADEL:guid
as it is not giving error (at least yet...) in the setup
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