To unsubscribe from a list, send email to listserv@listserv.arizona.edu with the following as the only line in the body of the message.
unsubscribe ritmoslatinos

NOTE: If you have a signature file that gets appended to each and every e-mail message you send you have 2 options when sending listserv commands.

Temporarily disable this facility when you send listserv messages.

OR

Include the command:
end

as the last command. Listserv will disregard all lines in your message after this command.

Example:
unsubscribe ritmoslatinos
end