[Mailman-Users] listserv as distribution mechanism for viruses

[Andy yonce]

Is there a way to prevent replies to a message from being broadcast to the members of a list. One of the members of a list computer was infected with the netsky.b virus. The list name was in the user's outlook address box. When the computer was infected with the virus, email got sent to everyone in the address list, including the list server. So now everyone in the list has the potential to be victimized. Usual solution, from the list member's point of view,  is to asked to be asked to be removed from the list.

This flaw has the potential to spread viruses at an exponential rate. And with bagle out there, the potential for extremely serious attacks exist. Are there any solutions to this problem from a mailman administrator perspective?

Thanks
Andy Yonce