XADM: Event ID 10016 "Invalid NT Account Mode" When You Use Mailmig.exe to Migrate From Lotus Notes to Exchange 2000 Server

When you use the Mailmig.exe command-line utility with the /c switch and the sample control file to migrate users from Lotus Notes to Exchange 2000 Server, the migration process is unsuccessful. The following event is logged to the Application event log:

Event Type: Error
Event ID: 10016
Source: MSExchangeMig
Description:
Invalid NT account mode NO specified in the control file.

This issue occurs when you migrate users who already have existing Microsoft Windows user accounts in Active Directory.

This issue may occur if the NTAccounts parameter in the control file is set to NO. You cannot use the NO option for the NTAccounts parameter in Exchange 2000 Server because this configuration is not supported.

To resolve this issue, if all the users who you want to migrate already have existing Windows user accounts:

1. Edit the Lotus Notes proxy address of the user in Active Directory to use the same address as the user in Lotus Notes.
2. Remove the NTAccounts parameter from the control file.
3. Run Mailmig.exe with /c switch and the control file.

Note When you use this procedure, distribution list (DL) memberships may not be retained for the users. To prevent users from losing DL membership, use the Active Directory Cleanup Wizard (ADClean.exe) to merge the Lotus Notes contact with the user account in Active Directory, and then run Mailmig.exe with the /c switch and the control file.

Additionally, note the following considerations when you use Mailmig.exe with the control file:

• If the ExchStore parameter is not specified in the control file, you must specify the following parameters:
  • Home-Server: The name of the Exchange 2000 server that contains the migrated mailboxes.
  • ExchStore : The name of the Exchange 2000 mailbox database that contains the migrated mailboxes.
• If Windows accounts and mailboxes already exist for users who you are migrating, and you do not want to create new mailboxes for your users during the migration, set the Mailbox parameter to FALSE to import messages to existing mailboxes.

The options that you can use with the NTAccounts parameter in the control file are RANDOM and ALIAS. By default, the NTAccounts parameter is set to RANDOM.

For more information about how to use Mailmig.exe to migrate from Lotus Notes to Exchange 2000 , see the "Mailmig.exe" topic in Exchange 2000 Server Help. To do so:

1. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
2. On the Help menu, click Help Topics.
3. Click the Index tab, type mailmig, and then press ENTER to view the topics returned.