Why does the list go down on sundays or early mondays?

Hi, Lately the list server fails at one point or another and stops working around the end of the weekend. This sunday, for example, it stopped about 11 UTC. In fact, this time I got several bounces, telling me that Cantor.suse.de can not connect to hermes-ext.suse.de. The funny thing is that the web list archive does show a later email, a spam one. Funny. Of course, I don't want anybody at suse to stay working on weekends just for our pleasure. But still, it is not nice that linux servers of a distro, that should be a sample of stability, should fail so often on weekends. -- Cheers, Carlos Robinson