Hello, > Although solution with sendmail is cleaner and more polite (the offender > gets the error why he/she is refused, and you are blocking only email), > I don't think that somebody who is not noticing that he/she is spitting > out viruses in such a high rate is going to notice and/or care about it. Well, you can just drop their packets or you can reject and tell them why. The decision is yours! :-) Regards, Alejandro Flores