Mailbox Role install fail on Exchange 2010 SP1 creating Event ID 1002

Here is the situation.  We have an exchange 2003 server we want to upgrade to 2013.  We are installing Exchange 2010 first, migrate the mailboxes to Exchange 2010 before we go to that upgrade path.  Installation fails at installing mailbox role.  Here is the error message from Event ID 1002

Mailbox Role
   Error: The following error was generated when "$error.Clear(); $name = [Microsoft.Exchange.Management.RecipientTasks.EnableMailbox]::DiscoveryMailboxUniqueName; $dispname = [Microsoft.Exchange.Management.RecipientTasks.EnableMailbox]::DiscoveryMailboxDisplayName; $dismbx = get-mailbox -Filter {name -eq $name} -IgnoreDefaultScope -resultSize 1; if( $dismbx -ne $null) { $srvname = $dismbx.ServerName; if( $dismbx.Database -ne $null -and $RoleFqdnOrName -like "$srvname.*" ) { Write-ExchangeSetupLog -info "Setup DiscoverySearchMailbox Permission."; $mountedMdb = get-mailboxdatabase $dismbx.Database -status | where { $_.Mounted -eq $true }; if( $mountedMdb -eq $null ) { Write-ExchangeSetupLog -info "Mounting database before stamp DiscoverySearchMailbox Permission..."; mount-database $dismbx.Database; } $mountedMdb = get-mailboxdatabase $dismbx.Database -status | where { $_.Mounted -eq $true }; if( $mountedMdb -ne $null ) { $dmRoleGroupGuid = [Microsoft.Exchange.Data.Directory.Management.RoleGroup]::DiscoveryManagementWkGuid; $dmRoleGroup = Get-RoleGroup -Identity $dmRoleGroupGuid -DomainController $RoleDomainController -ErrorAction:SilentlyContinue; if( $dmRoleGroup -ne $null ) { Add-MailboxPermission $dismbx -User $dmRoleGroup.Identity -AccessRights FullAccess -DomainController $RoleDomainController -WarningAction SilentlyContinue; } } } } " was run: "Couldn't resolve the user or group "rcdob.org/Microsoft Exchange Security Groups/Discovery Management." If the user or group is a foreign forest principal, you must have either a two-way trust or an outgoing trust.". Couldn't resolve the user or group "rcdob.org/Microsoft Exchange Security Groups/Discovery Management." If the user or group is a foreign forest principal, you must have either a two-way trust or an outgoing trust. The trust relationship between the primary domain and the trusted domain failed.  

Any information will be greatly appreciated and thank you in advance for your time in this matter.
rcdobAsked:
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AmitIT ArchitectCommented:
Same error discussed in this article:
https://supertekboy.com/2014/05/06/5-errors-upgrading-to-exchange-2010-sp3-and-how-to-fix-them/

You need to delete discovery mailbox.
Seth SimmonsSr. Systems AdministratorCommented:
Mailbox Role install fail on Exchange 2010 SP1

why are you installing SP1?  it has been out of support since january 2013
fix the discovery mailbox issue and install sp3 (they are cumulative; can go straight to sp3) then install update rollup 9

Microsoft Exchange Server 2010 Service Pack 3 (SP3)
https://www.microsoft.com/en-us/download/details.aspx?id=36768

Update Rollup 9 For Exchange 2010 SP3
https://www.microsoft.com/en-us/download/details.aspx?id=46372

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rcdobAuthor Commented:
Seth,

Thank you so much for your time and effort.  What you shared with me resolved exactly as you said it would.  I was able to to finally before close of business today able to get the initial install of SP1 installed.  Installed SP3 and the rollup and was able to get it up and running and migrate a test account from Exchange 2003 to Exchange 2010 to finally get to the dnd goal which is Exchange 2013.
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