You see the warning message in the logs "WARNING: Decomposition time out" after upgrading Symantec Mail Security Appliance to 7.5.0-26.
Mailflow slows or stops
Filter-hub exits on signal 9, but none of the bad messages gathered by diagnostics contain a timestamp that corresponds to the time of the filter-hub crash.
The following messages appear repeatedly in the filter hub log:
(WARNING:2653.2893323184):  Decomposition time out (the message has taken longer than the configured 60 seconds to decompose).
(ERROR:2653.2901715888):  Invalid audit policy request.
The upgrade.txt file shows the Appliance upgrade path includes 4.1.x.
The Appliance hardware model is 8220 or 8240.
As a temporary workaround, please restart the operating system of the Appliance.
Symantec suggests upgrading to the latest version of the appliance.
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