Unsubscribing from an Announcement List
The best way to unsubscribe from a list is to send a blank email to the unsubscribe address specified at the bottom of each email you receive. This address is in the form of
leave-listname-yourspecialnumber@yourserver
The "special number" is a unique identification number that ensures you will be unsubscribed.
Alternatively, you can leave out this unique ID number and send a blank email to
leave-listname@yourserver
For example:
leave-soccer@example.net