Error:
MailScanner: Attempt to hide real filename extension (document.xml.rel)
This is becuase M$ Office 2007 documents (.docx, .xlsx etc, etc.) seem to be archived XML documents and MailScanner does not like that.
The solution is to put this in filename.rules.conf
allow \.xml\.rel$ - -
allow \.rel$ - -
allow \.docx$ - -
allow \.xlsx$ - -
allow \.xml\d*\.rel$ - -
allow \.x\d+\.rel$ - -
allow [...]
-
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