Error 'Unable to make connection to the server' when trying to migrate from Exchange 2003

I am having an issue migrating mailboxes from an Exchange 2003 server to Exchange 2010 in another forest. I've ran ADMT to start the migration, and am not ready to test the Exchange move.

The prepare-mailbox works fine. It's the move mail command that does not.

The commands I am running are:

$LocalCredentials = Get-Credential
$RemoteCredentials = Get-Credential

.\Prepare-MoveRequest.Ps1 -Identity test1 -RemoteForestDomainController dc.olddomain.com -RemoteForestCredential $RemoteCredentials -LocalForestDomainController dc.newdomain.com -LocalForestCredential $LocalCredentials -UseLocalObject -Verbose

New-MoveRequest -Identity test1 -TargetDatabase 'Mailbox Database 1' -remoteGlobalCatalog 'dc.olddomain.com' -remoteCredential $RemoteCredentials -TargetDeliveryDomain newdomain.com -RemoteLegacy -verbose

The error I get is:

MapiExceptionNetworkError: Unable to make connection to the server. (hr=0x80004005, ec=2423)
Diagnostic context:
    ......
    Lid: 15000   dwParam: 0x6BA      Msg: EEInfo: prm[2]: Pointer val: 0xCA0313AC00000000
    Lid: 16280   dwParam: 0x6BA      Msg: EEInfo: ComputerName: n/a
    Lid: 8600    dwParam: 0x6BA      Msg: EEInfo: ProcessID: 2344
    Lid: 12696   dwParam: 0x6BA      Msg: EEInfo: Generation Time: 2012-12-26 19:35:36:467
    Lid: 10648   dwParam: 0x6BA      Msg: EEInfo: Generating component: 18
    Lid: 14744   dwParam: 0x6BA      Msg: EEInfo: Status: 10060
    Lid: 9624    dwParam: 0x6BA      Msg: EEInfo: Detection location: 318
    Lid: 13720   dwParam: 0x6BA      Msg: EEInfo: Flags: 0
    Lid: 11672   dwParam: 0x6BA      Msg: EEInfo: NumberOfParameters: 0
    Lid: 45169   StoreEc: 0x977
    Lid: 52465   StoreEc: 0x977
    Lid: 60065
    Lid: 33777   StoreEc: 0x977
    Lid: 59805
    Lid: 52209   StoreEc: 0x977
    Lid: 56583
    Lid: 52487   StoreEc: 0x977
    Lid: 19778
    Lid: 27970   StoreEc: 0x977
    Lid: 17730
    Lid: 25922   StoreEc: 0x977
    + CategoryInfo          : NotSpecified: (0:Int32) [New-MoveRequest], RemoteTransientException
    + FullyQualifiedErrorId : BA3AEC32,Microsoft.Exchange.Management.RecipientTasks.NewMoveRequest
    + PSComputerName        : exchange.newdomain.com

Running in verbose mode shows that is fails when 'loading source mailbox info". I would assume it's on the Exchange 2003 server, and not the source domain controller.

Troubleshooting, I saw most people who've receiving this error were due to the FQDN or Netbios name not being resolved. I don't have this issue, as both domain names are in DNS Suffix for all NICS. I can ping vie both, no problem.

All accounts I am using are the domain Administrators accounts with proper access to exchange on both ends.

I don't see any other errors pointing to an issue.

Tom Drought