This might work on a low volume list, however I can't see it working on a high volume, fast paced list. Lists are not time zone specific and there are lists where people post as the day (and night) progress across the world. Listserv's ability to deny attachments has worked quite well at blocking most viruses on lists that I'm on where virus propagation used to be a very high occurrence. Then, there is the individual responsibility of running an up to date antivirus program. 

Dan Robinson
[log in to unmask]

> -----Original Message-----
> From: Paul Russell [mailto:[log in to unmask]]
> Sent: Monday, March 04, 2002 5:28 PM
> To: [log in to unmask]
> Subject: Use confirmation on posting to prevent list from becoming a
> vector for infection
> 
> 
> The following message was posted to the UNISOG list and is 
> reposted here
> with the express permission of the author. The message 
> specifically refers
> to majordomo lists, however, the vulnerability is not 
> product-specific. Any
> list, hosted on any mailing list management product, can 
> become a vector for
> the spread of an email-borne virus, if the list owner does not take
> appropriate precautions to prevent such incidents.
> 
> One way to reduce the likelihood that your list will become a 
> vector for
> the distribution of an email-borne virus is to implement 
> confirmation on
> posting, i.e., require an explicit confirmation from the 
> apparent sender of
> a message before that message is posted to the list. This is 
> independent of
> any type of moderation that may be in effect on the list.
> 
> 
> UNISOG list archives: http://www.theorygroup.com/Archive/Unisog/
> 
> --
> Paul Russell
> Senior System Administrator
> University of Notre Dame
> 
> > 
> ----------------------------------------------------------------------
> >
> > Subject: New variant of Hybris (?) infecting majordomo closed lists
> > Date: 26 Feb 2002 10:23:56 +1300
> > From: Russell Fulton <[log in to unmask]>
> > To: [log in to unmask]
> >
> > HI All,
> >         I don't know if this is old hat, but we have not 
> struck this before.
> > Heads up just in case.
> >
> > The academic year starts next week and we are increasingly 
> reliant on
> > large mailing list to communicate with students and, of 
> course now is
> > the peak time for these lists to be used. Over the last few 
> days we have
> > had three cases where HYBRIS managed to infect closed 
> majordomo lists
> > (lists are set up so only a few addresses can post to them).
> >
>
>