About the use of the "return-receipt-to" ....

Hi !

I'm working on technical problems about the interoperability between
different MTAs and i have a very simple question.

What is the "return-receipt-to" field ?

Some MTA (eg : Lotus) interpret that field as a MDN request. Is it legal and
clearly defined in RFC ?

Thanks for your reply 

Nicolas QUENTIN
THALES COMMUNICATIONS
Tél : 01.41.30.49.54