Hello Bastiaan, I did not receive any Arachne list trafic from Christmas, I have just downloaded all trafic dated from 8th January. Nothing between those dates.
"Majordomo" is the software that executes commands relating to listservers. (As far as I know) 73 Laurie -- Arachne V1.70;rev.3, NON-COMMERCIAL copy, http://arachne.cz/
