Actually Symantec (as fas as I know) doesn't have an ESE based scanner yet.
The two who do are Trend Micro (www.antivirus.com) and Sybari
(www.sybari.com)


-----Original Message-----
From: Hansen, Eric [mailto:[EMAIL PROTECTED]] 
Sent: Monday, March 04, 2002 2:41 PM
To: Exchange Discussions
Subject: RE: AV v. IMS question


I personally have not seen this here either, we dropped groupshield a while
back.  It jsut struck me as odd cause that seems like a pretty MAJOR
drawback.  I remember when loveletter hti we got flodded, but nothing got
through, but it really hit the bandwidth on our internet hard.

Would you happen to know, outside of symantec.com, where i might be able to
find more information on ESE?  How it works and whatnot. 

e-

-----Original Message-----
From: Martin Blackstone [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 04, 2002 3:41 PM
To: Exchange Discussions
Subject: RE: AV v. IMS question


MAPI based scanners will overload and pass attachments. I have seen it
happen personally (#1 reason I originally dumped Groupshield). There is some
case study that says AVAPI can overload as well, but I have never heard of
this happening for real. Apparently this isn't a problem at all for ESE
based scanners.

-----Original Message-----
From: Hansen, Eric [mailto:[EMAIL PROTECTED]] 
Sent: Monday, March 04, 2002 2:35 PM
To: Exchange Discussions
Subject: AV v. IMS question


Hi

I was looking at some policy examples on rr.sans.org(we are gearing up for
hippa) and I ran across this in a section talking about policy for AV on
mail servers.....

**
When large numbers of attachments must be blocked within a short period of
time, such as during an outbreak of a new Microsoft Outlook Visual Basic
virus, running attachment blocking on both the mail gateway and the internal
mail server helps prevent infected attachments from slipping through due to
overload. 
**

I wasn't aware of behavior such as this and was curious if this happened
where a email server lets otherwise infected emails through because its
getting overworked?  I would imagine those items would bounce or queue up in
some way or possibly even down the IMS and stop traffic.

any thoughts?

e-

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