I run McAfee constanty. Updates at every sign on.
I receive the same undelivered mail notices all the time. I also have received emails from board members that I wouldn't open because of the subject line. It may not be a members infected computer. Maybe someone or thing downloaded all the email addresses straight off of this board. That is why Greg wanted to have the email addresses hidden awhile back but everyone thought it was an inconvenience. I am also using SBC DSL that automaticly runs an anti virus check for me before letting me download anything and it has saved me a headache or two. Our only defense is to keep our own systems clean.