Symantec Mail Security for Microsoft Exchange (SMSMSE) reports ZIPX files as unscannable. SMSMSE may block or quarantine these files.
The Windows Application Event log contains the following event:
Log Name: Application
Source: Symantec Mail Security for Microsoft Exchange
Date: 12/6/2011 2:17:54 PM
Event ID: 218
Task Category: Unscannable
The attachment "test.zipx" located in message with subject "None",
located in Administrator/Drafts has violated the following policy settings:
Rule: Unscannable File Rule
The following actions were taken on it:
The attachment "Gma's Party.zipx" was Quarantined for the following reason(s):
Scan Engine Error. CSAPI DEC result: 0x29. The DEC scanner resultID attribute
is not set or is an invalid ID.
For more information, visit
SMSMSE is unable to decompress the file because the compression algorithm is unexpected or unknown.
Symantec is aware of this issue. This article is updated as more information is available. Subscribe to this article to receive updates.