I suspect yes, because Lotus Notes was briefly very fashionable for corporate communication, and apparently supported NNTP, according to this article (PC Magazi

I suspect yes, because Lotus Notes was briefly very fashionable for corporate communication, and apparently supported NNTP, according to this article (PC Magazine, 24 Feb 1998): https://books.google.co.uk/books?id=C5-l28dcz50C&pg=PA186&lpg=PA186&dq=nntp+lotus+notes&source=bl&ots=0glxK_thZw&sig=YBX3XHdL3MDFz1BH0RCl420oHQA&hl=en&sa=X&ved=0ahUKEwjB4tr4qcPUAhXrDsAKHdxJCZMQ6AEIRjAH#v=onepage&q=nntp%20lotus%20notes&f=false https://books.google.co.uk/books?id=C5-l28dcz50C&pg=PA186&lp... (if the link doesn't work, search for NNTP Lotus Notes)