XFOR: Messages Sitting in Microsoft Mail Connector Queue and Event ID 2028

• Microsoft Exchange Server, versions 4.0, 5.0, 5.5

SYMPTOMS

Messages may accumulate in the message transfer agent (MTA) queue (the Microsoft Mail Connector queue), and message flow from Exchange Server to the Microsoft Mail postoffices may stop. In addition, the following error message may be displayed in the application event log in the Windows NT Event Viewer:

Event ID 2028
Source MTA

A fatal internal MTA error occurred. Contact Microsoft Product Support Services.

Unable to encode the message tracking event. Event node = Vvt07, Error code = Mandatory node cannot be omitted [BASE XFER-IN 25 88](16)

RESOLUTION

To correct this problem, perform the following steps:

1. Search for any error message in the application event log that includes the phrase, "Object at fault."



2. Using File Manager, delete the corresponding .dat file in the MDBData directory. For example, if you find the phrase "Object at fault 0600009B" in the application event log, delete the file Mtadata\DB00009B.dat.



3. At a command prompt, type:

   exchsrvr\bin\ mtacheck /v /f log file name.log

   This may also delete more DBxxxxx.dat files.



4. Restart the services; all the services start successfully.



5. Check the Micorosoft Mail Connector queue; all the messages are gone.

MORE INFORMATION

For additional information about when to use Mtacheck, click the article number below to view the article in the Microsoft Knowledge Base:

Q148284 XCON: When and How to use the Mtacheck Utility

Q149017 XCON: MTACheck Event IDs and Command Line Syntax

Additional query words: PCMAIL

Keywords : exc4 exc5 exc55
Version : winnt:4.0,5.0,5.5
Platform : winnt
Issue type : kbprb