Thomas, I just implemented VirusWall, but in a different configuration than
you have.

I think you should start by turning off the "Disable insertion of InterScan
"Received:" header when processing messages".  This is on the Advanced
Options of the GUI, or in the intscan.ini in the [EMail-Scan] section by
setting DisabledReceivedHeader=no.

Then put in an IPBYPASS for that IP, which you say is 10.0.0.14

I'll have to leave it to others to comment on how this will affect your
SPAMDOMAINS test.

And FWIW, the Trend Micro InterScan VirusWall SMTP module does not "gateway
the TCP connection".  It is a normal mail relay. It behaves as a normal MTA,
receiving the entire message and committing it to disk before it scans the
message for a virus.  The confusing bit is that it happens to have a feature
that it can happily forward mail to any port you specify (instead of just
tcp/25), which is a convenience for many who want to run the VirusWall on
the same box as their usual MTA.

More implementation notes (off topic):

- Trend doesn't do a sterling job of organizing the updates to this product.
I found it necessary to make several tickets with their support desk and as
a result applied:

- the latest VSAPI engine 6.510-1002

- isnt3.53_servicepack_au1.32_b1000.zip to get the latest ActiveUpdate
software

- ISNTHotFix_B1563.zip to fix the logging of the inbound message action

And the following changes to the intscan.ini to turn on silently
quarantining the whole message if a virus is found in an inbound message
(this is documented in the readme.txt):

[EMail-Scan]
HoldInfectedInboundMsgs=Yes

I advise turning off this restrictive behaviour to prevent false positives
in Trend Micro Solution ID 13509:

[EMail-Scan]
AllowMultiContentType=yes (default is no)

VirusWall has the default behaviour of throttling the mail if there are more
than 20 bad attempts to address mail through it.  You'll want to set it to
whatever number you feel comfortable with (note, these entries must be
created):

[EMail-Scan]
MaxInServerTryCount=0 (default is 20)
MaxOutServerTryCount=0 (default is 20)

Andrew 8)

-----Original Message-----
From: Thomas Kishel [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, August 06, 2003 7:05 AM
To: [EMAIL PROTECTED]
Subject: Re: [Declude.JunkMail] IPBYPASS not working


Scott,

> The question here is "What do you want IPBYPASS to do"?

We are using TrendMicro's VirusWall in front of our IMail server. It's SMTP
service appears to gateway a tcp connection between the sending and
receiving
mail servers. Therefore, IMail sees incoming connections with the sending
server
representing itself with its configured host name but with the IP address of
the
gateway. I have configured Declude (1.75) to IPBYPASS that address, but the
SPAMDOMAINS test always fails.

Are my expectations unrealistic considering my environment,
or is SPAMDOMAINS not honoring IPBYPASS?

--

Topology:

Internet ->
Firewall [(NAT) 208.20.231.2 -> 10.0.0.2] ->
TrendMicro VirusWall [10.0.0.14] ->
Declude-IMail [10.0.0.4]

-- 

Headers:

Received:
    from web80703.mail.yahoo.com [10.0.0.14]
    by email.meridiancg.com (SMTPD32-8.00) id AD711A3011C;
    Wed, 06 Aug 2003 09:06:57 -0400
Message-ID:
    <[EMAIL PROTECTED]>
Received:
    from [208.20.231.2]
    by web80703.mail.yahoo.com via HTTP;
    Wed, 06 Aug 2003 06:09:53 PDT
Date:
    Wed, 6 Aug 2003 06:09:53 -0700 (PDT)
From:
    Thomas Kishel <[EMAIL PROTECTED]>
Subject:
    Test

--

Declude Log:

08/06/2003 09:06:59 Qfd7101a3011ca7cd
    Msg failed SPAMDOMAINS (Spamdomain 'yahoo.com' found:
    Address of [EMAIL PROTECTED] sent from invalid .).
    Action=LOG.

08/06/2003 09:06:59 Qfd7101a3011ca7cd
    Subject: Test

08/06/2003 09:06:59 Qfd7101a3011ca7cd
    From: [EMAIL PROTECTED]
    To: [EMAIL PROTECTED]  IP: 10.0.0.14 ID:

--

IMail Log:

SMTPD (01A3011C) [10.0.0.4] connect 10.0.0.14 port 42167

SMTPD (01A3011C) [10.0.0.14] HELO web80703.mail.yahoo.com

SMTPD (01A3011C) [10.0.0.14] MAIL FROM:<[EMAIL PROTECTED]>

SMTPD (01A3011C) [10.0.0.14] RCPT TO:<[EMAIL PROTECTED]>

--

Thomas Kishel, Department Head - Systems
Larson Texts, Inc.


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