As the results of recent wild email "worms" clugging the internet, my smartlist has taken off hundreds of good email addresses off one of our research discussion lists (15% of total) due to repeated SMTP connection failure (time out), and the mail delivery has become VERY SLOW (for a mail it used to take 3 minutes to distribute, it now takes 5-7 days!). Anyone else experience similar? Although I can find those wrongly removed addresses from the log file and "manually" (with a script) add them back, I wonder can this community do something? Zhiliang