Jari,

> I have latest amavisd-new and clamd from Debian Lenny /backports.
> It does not seem to recognise virii in email (just this one kind of
> trojan is the culprit), but clamd reports fine when trying manually the
> email attachment later.
> [...]
> Manual scan:
> $ clamscan DHL_document_82660.zip
> DHL_document_82660.zip: Suspect.Bredozip-zippwd-2 FOUND
> [...]
> It's always that Bredolab that is not recognised, so it seems. Other
> kinds of virii reported ok, I think.
> 
> If I configure other scanners for amavisd those will get recognised by
> the other scanners ok (F-Prot, BitDefender).

Perhaps clamav needs a complete message to be able to recognize this
type of load.  Try adding qr'^MAIL$' to your @keep_decoded_original_maps
in amavisd.conf, e.g.:

@keep_decoded_original_maps = (new_RE(
  qr'^MAIL$',  # retain full original message for virus checking
  qr'^MAIL-UNDECIPHERABLE$',
  qr'^(ASCII(?! cpio)|text|uuencoded|xxencoded|binhex)'i,
));


Mark

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