DOCUMENT:Q196664  30-SEP-1999  [exchange]
TITLE   :XCON: MAD Consumes 100% CPU While Recalculating Routing
PRODUCT :Microsoft Exchange
PROD/VER:WinNT:5.5
OPER/SYS:
KEYWORDS:exc55 EXC55SP3Fix

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
-------------------------------------------------------------------------------


SYMPTOMS
========

An Administrator attempts to recalculate routing, but the action never finishes.
The Mad.exe process is seen to be using approximately 100% of the CPU.

CAUSE
=====

A logic error in the code which generates an ELSE leg of the Gateway Routing
Table (GWART) causes the recalculation to loop.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Exchange Server
version 5.5. For additional information, please see the following article in the
Microsoft Knowledge Base:

   Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or
later:

Component: Message Transfer Agent (MTA)

   File Name      Version
   -------------------------
   Dbserver.sch   5.5.2510.0
   Dcprods.cat    5.5.2510.0
   Ems_rid.dll    5.5.2510.0
   Emsmta.exe     5.5.2510.0
   Info4log.cfg   5.5.2510.0
   Infoblog.cfg   5.5.2510.0
   Infodlog.cfg   5.5.2510.0
   Infollog.cfg   5.5.2510.0
   Infotlog.cfg   5.5.2510.0
   Mtacheck.exe   5.5.2510.0
   Mtamsg.dll     5.5.2510.0
   P2.xv2         5.5.2510.0
   X400om.dll     5.5.2510.0
   X400omv1.dll   5.5.2510.0



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem was first corrected in Exchange Server 5.5 Service
Pack 3.

Additional query words: RID GWART
======================================================================
Keywords          : exc55 EXC55SP3Fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : WinNT:5.5
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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