Your request to Majordomo was not processed because we have replaced Majordomo at this site with the mailing list manager called Mailman. Mailman supports mail-based commands very similar to those of Majordomo, and in addition supports a web-based interface. With the email-command interface, list-specific requests like 'subscribe' or 'who' *must* be sent to the list-specific '-request' address for the particular list, e.g. 'matrix-sig-request@python.org'. You can send general requests, like 'help' to get the list of commands, or 'lists' for the list of mailing lists at this site, to '%(superlist)s-request@%(site)s. You can also send these commands to the '-request' address for any of the particular lists. Alternately, you can use the list info web page for the list, e.g. %(listinfo)s/%(sample)s for list membership and subscription procedures. If you have questions or need other help, contact the mailman administrator at %(admin)s@%(site)s. Thanks!