You may find in some situations, the Symantec Messaging Gateway(SMG) could not filter messages by using custom Content Filter(CF) policies as expected.
The conditions in these CF policies may just defined to filter some key words or regular expressions to check the message headers/bodies, and it works in most cases, but it doesn't work when the subject is too long or it contain to many DBCS (double-byte character set).
When changing the length of the subject string(exceed 76 ASCII characters), the result maybe different;
When using different MUA as the sender client, the result maybe different;
When the target string in the RAW Source of the message had been wrapped to several lines, the result maybe unexpected;
When the target string in the RAW Source of the message is all in one line, the result maybe expected.
There is a issue when processing 'encoded-word', which were follow RFC2047.
Symantec has acknowledged this issue and working for the solution.
Affected SMG versions: 9.5.x, 10.0.0-x and 10.0.1-2.
Imported Document ID: TECH201036
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