Microsoft KB Archive/152903

= XFOR: Mail Connector Dispatch Fails Against Postoffice on Unix =

Article ID: 152903

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 4.0 Standard Edition

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This article was previously published under Q152903



SYMPTOMS
When you use the Microsoft Exchange 4.0 MS Mail Connector against an MS Mail Postoffice that is residing on a UNIX server, it will not dispatch mail from the Postoffice. Messages will be successfully dispatched into the Postoffice, but the following event ID will be generated by the Microsoft Exchange PC MTA in the application event log upon attempting to retrieve outbound mail from the Postoffice(s) on the UNIX computer:

Event ID: 4254

Unable to deliver mail to \\servername\maildata\P1\XXXXXXXX.0lk

MS Mail Connector (PC) MTA will retry in the next cycle.



CAUSE
Mail is not dispatched from the Postoffice because files on the UNIX system are written in lower case. The Microsoft Exchange 4.0 Microsoft Mail Connector requests creation of the file in upper case and expects \P1\ .0LK files to be generated. Specifically, the semaphore file is thought to be from another process when it is not in upper case. As a result, mail will not be dispatched.



STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem was corrected in the latest Microsoft Exchange Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: LMUX undeliverable

Keywords: kbusage KB152903

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