Many are attempting to unsubscribe recently, mainly I think because they wish to only use the list at egroups.com However because the 'unsubscribe' notices are getting to the mailing list(s), then they are being done in error, so a refresher seems in order.
If you ever want to remove yourself from this ( SAP400Zm... ) mailing list, send a mail from the account you are subscribed with To
MajordomoZm... < Please note it says Majordomo NOT SAP400 > with the following in the BODY of your email message:
if this is done correctly, you will receive a messsage from the server saying 'successful' and people on the general mailing list will not even see that you have unsubscribed.
If you have not already you may wish to subscribe to the egroups list Some advantages on doing so is a searchable archive, ability to view email online if required, all messages start with the word enabling easy filling/forwarding rules if required. The slight disadvantage is that the emails to the egroup list arrive slightly later, but that it is hardly noticable.