Manager Guide: Privacy Settings
Please double-check to make sure the following settings are correct for your list. They are important to protecting the privacy of your subscribers' messages and to preventing spammers from farming their email addresses.
http://lists.uua.org/mailman/admin/listname/privacy ("Privacy options...") includes two options that will protect your subscriber's email addresses. At the bottom of the page, in answer to the "Who can view subscription list?" question, answer either "List members" or "List admin only." Answer "Yes" to the question, "Show member addresses so they're not directly recognizable as email addresses?" then click the "Submit Your Changes" button.
Be sure your list's archives are private (viewable only by subscribed members). On http://lists.uua.org/mailman/admin/listname/archive ("Archiving Options") answer "private" to the question, "Is archive file source for public or private archival?" then click the "Submit Your Changes" button. The only lists that should have public archives are announcement-only lists that act as newsletters.
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For more information contact firstname.lastname@example.org.