Leave the subject line blank, and omit your signature. Send email containing only unsubscribe calndr-l to the listserver address. This is called a Digest. If you change your mind, send set calndr-l nodigest .
All archives are available by email.
You may request a monthly archive and it will be mailed to you immediately. Some of these are rather large files. The archives go back to January 1997. To retrieve the archive for that month, send get calndr-l LOG9701 to the listserver address. You probably turned off this function without realizing it.