Dear colleagues,

I experienced strange problem with uvscan not detecting
W32/[EMAIL PROTECTED] I would very much appreciate any hints!

My setup:

SMTP gateway powered by FreeBSD 5.3-STABLE, qmail-scanner 1.25st with
uvscan (BSD) and SA 3.0.2:

uvscan --version
Scan engine v4.4.00 for BSD.
Virus data file v4473 created Apr 20 2005
Scanning for 123634 viruses, trojans and variants.

SMTP gateway checks messages for virus/spam and forwards email to
internal email server powered by MS Exchange with McAffee Group Shield
installed (with same dat version: 4473).

Now, uvscan didn't recognize infected message but McAffee Group Shield
did. I don't understand why since both servers have the same dat
version.

Here is more information from qmail-queue.log:

Thu, 21 Apr 2005 08:24:52 KGST:97126: +++ starting debugging for
process 97126 (ppid=97125) by uid=82
Thu, 21 Apr 2005 08:24:56 KGST:97126: w_c: elapsed time from start 4.619099 secs
Thu, 21 Apr 2005 08:24:56 KGST:97126: return-path='', recips='[EMAIL PROTECTED]'
Thu, 21 Apr 2005 08:24:56 KGST:97126: from='Mail Delivery System
<[EMAIL PROTECTED]>', subj='Mail delivery failed:
returning message to sender', via SMTP from 217.22.128.37
Thu, 21 Apr 2005 08:24:58 KGST:97126: uvscan: finished scan in 2.23322 secs
Thu, 21 Apr 2005 08:25:24 KGST:97126: SA: REPORT hits = -0.3/3.5         
2.3 UNIQUE_WORDS BODY: Message body has many words used only once
-2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000]
0.0 UPPERCASE_25_50 message body is 25-50% uppercase   

Thu, 21 Apr 2005 08:25:24 KGST:97126: SA: required_hits 3.5 /
sa_quarantine +2.1 / sa_delete +4.2
Thu, 21 Apr 2005 08:25:24 KGST:97126: SA: finished scan in 25.20014
secs - hits=-0.3
Thu, 21 Apr 2005 08:25:24 KGST:97126: p_s: finished scan in 0.05148 secs
Thu, 21 Apr 2005 08:25:24 KGST:97126: ini_sc: finished scan of
"/var/spool/qmailscan/tmp/mail.manas.kg111405029269497126"...
Thu, 21 Apr 2005 08:25:24 KGST:97126: ------ Process 97126 finished.
Total of 32.32356 secs

When this message reached MS Exchange it was detected as
W32/[EMAIL PROTECTED] virus.

I checked list archives, both tnef and unzip are called by QS from
proper place and other modern viruses are also successfully detected
by uvscan/QS.

Any hints?

Thank you for your time.

Roman


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