Issues occur when I migrate large sized NSF file

Migration from NSF to PST is always considered to be tedious and troublesome. When the case is of migrating large sized Notes .NSF file to Outlook .PST file, the situation becomes worse. Because exportation of large sized Lotus Notes .NSF file to MS Outlook is accompanied with lots of issues and many error messages arise in such situations. Suppose if you are migrating NSF file of 4MB or above size to PST file, your migration halts midway.

You must know an exclusive service for migration ‘Microsoft Transporter Suite’ developed by Microsoft. This utility is used to export user mailboxes from Lotus Domino Server to MS Exchange Server in an easy way. But sometimes this utility doesn’t provide accurate migration results and fails when you migrate a large sized NSF file. you receive following error message:

“The message was migrated without the attachments. This error might be due to configuration limitations on the server.

Error details: Maximum request length exceeded.”

Reason for this behavior is quite clear, which is related to size limit for migration. Default limit in ASP.NET is 4 MB (maximum). Actually, Web services does not migrate attachments that are larger than default limit i.e.4MB until and unless some additional configuration is made.

But not to worry, you can get rid of this problem, provided you make some changes in the settings. You will need to increase the input stream buffering threshold value. You may also need to increase the execution time-out period. To do this, follow these steps:

• Start Notepad.

• Under the following directory, open the Web.config file:
  drive:\%PROGRAMFILES%\Microsoft\Exchange Server\ClientAccess\exchweb\ews

• In the Web.config file, add the following line after the <system.web> tag:

• <httpRuntime executionTimeout="1200" maxRequestLength="51200" />

• It is to be noted that the executionTimeout attribute is in seconds. This attribute indicates the maximum number of seconds that a request can run before ASP.NET automatically stops the request. The maxRequestLength attribute is in kilobytes (KB). Adjust each attribute as appropriate for your environment.

• Save and then close the Web.config file.

• Restart the World Wide Web publishing service.

By following these steps, you can be assured of increase in the input stream buffering threshold value. Now if you can migrate the email of 4MB size from Lotus Domino to Exchange Server, there would be absolutely no problem.

If still the problem persists, then you must deploy third party professional email migration tools that are easy to use and free from any complexities. NSF to PST could be given a stand for Notes to Outlook migration purposes. With NSF to PST software, you can easily convert emails, attachments, images, drafts, sent items, journals, calendar, to-do list, appointments, tasks, address book, folder and sub-folders of .NSF file to .PST or Exchange Server and without any file size limitation. NSF to PST tool completely preserves formatting of the emails like bolded text, color text, italic, and text underlining etc. moreover, it directly saves the converted nsf files to Exchange server profile and let you sit at ease.