Sorry - I just can't get my head around the concept that because a server somewhere in the world, infected with a worm that's been around for well over a year, randomly generated the address of your PC, you thought you should inform the sysadmin of some other server. You say, somewhat huffily, that they never bothered to reply. Why should they? Why is it of interest to them that a server somewhere in the world randomly attacked the IP address of your PC? If everybody whose system was randomly attacked or probed by an infected one emailed that news to the administrators of every system that they knew about, the damage done by that network traffic would probably rival that done by the worm itself.
BTW - DIYnot runs Linux, and so is not at risk from this worm.
BTW - DIYnot runs Linux, and so is not at risk from this worm.