[Mimedefang] vcs extension

Kenneth Porter shiva at sewingwitch.com
Sun Apr 7 05:09:10 EDT 2019

I just got a legitimate text vCard attachment in my quarantine with a .vcs 
extension. It's in the list of bad file extensions in the default filter. 
Why is that? Is this extension used for some bad binary formats? Or can a 
vCard carry dangerous macros? I'm trying to decide whether to remove vcs 
from the list, since calendar files for appointments do seem like a 
legitimate thing to receive.

The sender was xtime, which seems to be an automotive dealer-customer 
management system, and it assigned application/octet-stream as the mime 
type of the attachment instead of a proper calendar type.


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