Article ID: 196217 - View products that this article applies to.
This article was previously published under Q196217
The Microsoft Exchange Server information store shuts itself down when the Jet database engine (EDB) reports that the hard disk drive containing the transaction logs is full. This problem may also occur when there is sufficient disk space available but the transaction logs are contained within a Services for Macintosh (SFM) volume.
The following sequence of events will appear in the Windows NT Application Event logs prior to the information store shutting down:
Event ID: 32 Source: EDB Type: Error Category: Logging/Recovery Description: MSExchangeIS ((273) ) Unable to create the log. The drive may be read-only or out of disk space. Error -1811.
Event ID: 1111 Source: MSExchangeIS Type: Error Category: General Description: An error occurred while writing to the database log file. Attempting to stop the Microsoft Exchange Information Store.
Event ID: 1101 Source: MSExchangeIS Private Type: Error Category: Background Cleanup Description: Error -510 occurred during a background cleanup on message 1-E85.
Event ID: 1101 Source: MSExchangeIS Private Type: Error Category: Background Cleanup Description: Error -510 occurred during a background cleanup on message 1-E8C.
Event ID: 1025 Source: MSExchangeIS Private Type: Warning Category: Transport General Description: An error occurred. Function name or description of problem: EcDoDeliverMessage Error: -510
Event ID: 1101 Source: MSExchangeIS Private Type: Error Category: Background Cleanup Description: Error -510 occurred during a background cleanup on message 1-E93.
After the information store has shut itself down, the administrator can restart the information store provided there is sufficient disk space available.
Event ID: 5004 Source: MSExchangeSA Type: Error Category: General Description: Generation of the offline Address Book is complete. Result: The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance. Microsoft Exchange Server Information Store ID no: 8004011d-0525-00000000.
This problem may occur when SFM has been installed on the Exchange Server computer and the Jet transaction logs (DSADATA and MDBDATA) reside on a Macintosh volume. After the information store has shut itself down after the error has occurred, a zero byte Edbtmp.log or a zero byte Edb.log file will be left in the MDBDATA directory. This error condition arises when the Edb.log file is full and needs to be rolled over to the next generation log file number. A zero byte Edbtmp.log file is created by Jet and is extended to a file size of 5 MB. Edb.log is then renamed to the next numbered log file (for example, Edb000xx.log). Edbtmp.log is then renamed to Edb.log and then jet continues processing new incoming messages.
The problem occurs in the transition of renaming these files when SFM is involved. With SFM, there are essentially two file indexes that need to be kept: NTFS and Apple Fileshare Protocol (AFP). A timing condition can arise where the AFP update occurs after the file has already been renamed and thus no longer exists under the old name in NTFS. If so, SFM will create a new zero byte file, which causes an error condition that reports back to Jet that "The file already exists." This error is eventually interpreted by Jet as being an out of disk space condition and the information store then shuts itself down to maintain the database integrity.
This problem can be avoided by not having any Jet transaction logs located on a SFM volume.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5.