A list is returned displaying the mailing lists to which a subscriber (by default the sender) is subscribed. If the sender is not a list manager and an email address is specified, the command is rejected.
Use the which command to find out which mailing lists a particular subscriber is a member of.
The which command returns a list of the mailing lists to which a particular subscriber subscribes. If the optional
email-address element is not specified, the subscriber reported on is the sender of the email. Only a list manager is entitled to specify a different email address.