The smartlist implementation at my ISP sends the following awkward confirmation message to those who try to subscribe:

It has been requested that the following address:

       testonly@test.net

should be added to the whatever mailing list.

The address has NOT yet been subscribed to the mailing list.
To subscribe you need to confirm the subscription
request by sending an email to the address:

        whatever-request@oreg.net

with the Subject string:

         CONFIRM s10240515293893

With a reasonable good email program a reply to this
message should be sufficient

I see no way to change this illiterate message. Can anyone on this list help?