C<publicinbox.NAME.url> is C<HTTP_URL>, and
C<publicinbox.NAME.address> is C<ADDRESS>. Multiple addresses
may be specified for inboxes with multiple addresses.
C<publicinbox.NAME.url> is C<HTTP_URL>, and
C<publicinbox.NAME.address> is C<ADDRESS>. Multiple addresses
may be specified for inboxes with multiple addresses.