Re: [Mimedefang] case of multiple virus scanners running

2005-02-16 Thread David F. Skoll
On Tue, 15 Feb 2005, Keith Patton wrote:

 Am I right to assume that if a mail message contains multiple
 attachments that mimedefang could spawn off a virus scan for each
 attachment?

Not unless you do that deliberately in your filter.  And even so, they'd
be sequential scans, not parallel ones.

--
David.
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RE: [Mimedefang] case of multiple virus scanners running

2005-02-16 Thread Mack
Interesting question... Has made me think

I currently have the system set for different modes of operation depending on 
certain factors
drop entire or drop part

in the drop entire, I scan the msg in filter_begin, and drop it if it contains 
a virus

in drop part, I scan the msg in filter_begin to see if it contains a virus, 
(make a note if it's clean or not)
If it's not clean i then scan each individual part so i can drop the offending 
part (reason for doing this is that scanning every part of every msg uses a lot 
of resources and takes more time with 3 virus engines running)
if it's marked as clean by the filter_begin scan I don't bother scanning the 
individual parts.

Am i likely to let anything slip through by doing this ?

or is there a better way of doing it ?


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of David
F. Skoll
Sent: Wednesday 16 February 2005 12:23
To: mimedefang@lists.roaringpenguin.com
Subject: Re: [Mimedefang] case of multiple virus scanners running


On Tue, 15 Feb 2005, Keith Patton wrote:

 Am I right to assume that if a mail message contains multiple
 attachments that mimedefang could spawn off a virus scan for each
 attachment?

Not unless you do that deliberately in your filter.  And even so, they'd
be sequential scans, not parallel ones.

--
David.
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This Email Has Been Anti-Virus Scanned


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Re: [Mimedefang] case of multiple virus scanners running

2005-02-16 Thread Keith Patton

If mimedefang creates  sequential scans, then I had some orphan scan 
processes...I'll go off in that direction..

thanks David,
Keith
David F. Skoll wrote:
On Tue, 15 Feb 2005, Keith Patton wrote:
 

Am I right to assume that if a mail message contains multiple
attachments that mimedefang could spawn off a virus scan for each
attachment?
   

Not unless you do that deliberately in your filter.  And even so, they'd
be sequential scans, not parallel ones.
--
David.
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[Mimedefang] case of multiple virus scanners running

2005-02-15 Thread Keith Patton
All,
I had the case were multiple instances of the virus scanner was running 
with only 2 sendmail processes, the load average went real high stopped 
sendmail and the virus scanner could not run either because all were 
waiting on more memory..  Lovely deadlock here...

Anyway...
Am I right to assume that if a mail message contains multiple 
attachments that mimedefang could spawn off a virus scan for each 
attachment?
Therefore, if a spammer sent in a message with x attachments at some 
point he could kill my server

So, is there a way to limit how many I will spawn off at one time?
thanks,
Keith
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