str(recipient)
documentation
programmers documentation
other antivir support
clamav.scanfile does not support dirname
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CLAM bugs:
  clamd don't close connections
  clamd shutdown on high usage (or on special mail?)
  clamscan --mbox - < FILE ...vs... clamscan --mbox FILE
    Any of them sometimes return no viruses found.
    Under one user return viruses one combination and under another
    second.
