W2k/SP1 Cluster E2k/SP1 shutdown while BE 8.5 backup Informationstore

[Maxel]

Hi,

when BE 8.5 backup the Informationstore, the first Event is:

Event Type: Error
Event Source: MSExchangeSA
Event Category: MAPI Session
Event ID: 9175
Date: 23.09.2002
Time: 18:13:16
User: N/A
Computer: XXXX2
Description:
The MAPI call 'OpenMsgStore' failed with the following error:
The attempt to log on to the Microsoft Exchange Server computer has failed.
The MAPI provider failed.
Microsoft Exchange Server Information Store
ID no: 8004011d-0512-00000000

For more information, click

http://www.microsoft.com/contentredirect.asp.

While the Backup run, the same Event comes every 30 Seconds.
Also 2 Hours after the Backup is completed, the same Event comes every 30 Seconds.

Than the Server hangs.

The last Event in the Systemlog is:

Event Type: Information
Event Source: NNTPSVC
Event Category: None
Event ID: 420
Date: 23.09.2002
Time: 23:20:17
User: N/A
Computer: XXXX2
Description:
Pickup Directory Status Report. In the last 60 minutes, the pickup directory for virtual server 1 has successfully received 0 articles.

And than no more. The Cluster fail over and e2k runs fine on the other Node.

Has anyone a Idea?

Thanks

PS
This Problem is since we have make a Offlinedefrag