Microsoft KB Archive/137998

= XFOR: Messages to Mac Users Not Processed in FIFO Order =

Article ID: 137998

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 Q137998



SYMPTOMS
Messages sent from a Microsoft Exchange Server to a Microsoft Mail for AppleTalk Networks server via the MS Mail Connector (AppleTalk) MTA are not always processed in first-in, first-out (FIFO) order.



CAUSE
This is by product design.



MORE INFORMATION
If gateway traffic is high and the Macintosh blocking factor (the number of messages processed by the Macintosh component each cycle) is set to a low value, the Exchange Server can backfill the gateway queue while the Macintosh gateway component processes the first group of incoming messages. Messages then placed in the queue by the Exchange Server can be processed ahead of messages handled during the previous cycle. This behavior can continue until the backfilling ceases.

Administrators can reduce this behavior by running the Macintosh Mail client against the gateway Macintosh server as Network Manager and raise the blocking factor on Mail menu, by choosing Gateway, Configuration.

Additional query words: mac message transfer agent

Keywords: kbinterop KB137998

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