Ah, OK, I notice that Reply goes to the list rather than to the sender ... 
most of the other lists I am on have changed that so Reply is to the 
Sender and one must Reply All or specifically paste-in the List to reply 
to it.  Saves a lot of noise.
I will use a different account for those cases where I need the Read Request 
feature.  (Technology has its limits!)
Sorry for the hassle!  :-)
Doc
  Yes YOU can toggle the return receipt option, but this is a mailing list.  
  There is no need for you to know if EVERYONE on the list reads your 
  postings.  Not to mention it is somewhat of a nusuance for the rest of 
  the participants especially on lists with 100's or 1000's of members.
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