Event ID - 986

Event Id986
DescriptionGetMessageType returned hr=0x8007000e, MsgType=0xffffffff. Size=0x9c06 (Class=0x0), Prio=0x1, Flags=0x2, TypeOfMsg=0x2000 OrigDN=<> cRRHosts=0, ChkSum=0x0 6RRHs=<>,<>,<>,<>,<>,<>
Event InformationAccording to Microsoft:
This problem occurs because of a memory leak in the Exchange routing engine. When messages go through the Routing Group connector after you change a routing group configuration, a new object is created. The Exchange routing engine performs an additional reference call on this object. When this behavior occurs, the Exchange routing engine cannot release memory.
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem.Only apply it to systems that are experiencing this specific problem.
Reference LinksEvent ID 986 from Source MSExchangeTransport

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