I've run into the following situation:

When an email comes in that is infected with
Worm.Mimail.G, clamscan isn't catching it, so
I did some manual testing:

Scan of the zip file:
------------------------------------------------------------
clamscan readnow.zip
readnow.zip: OK
------------------------------------------------------------
Responds that the zip file is fine.

Unzip the zip file:
------------------------------------------------------------
unzip readnow.zip
Archive:  readnow.zip
warning [readnow.zip]:  3 extra bytes at beginning or within zipfile
  (attempting to process anyway)
file #1:  bad zipfile offset (local header sig):  3
  (attempting to re-compensate)
 extracting: readnow.doc.scr
-----------------------------------------------------------
Strange zip file.. but unzip handled it.

Scan the extracted file:
------------------------------------------------------------
clamscan readnow.doc.scr
readnow.doc.scr: Worm.Mimail.G FOUND
------------------------------------------------------------
Clamscan finds the contents to be a virus.

Anyone have any suggestions / fixes for this
behavior?.. Clamscan has been great at catching
everything else.

-Russell



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