We are experiencing a Lotus Notes issue with converting to HTML. Several users have a thread gong back and fourth and after a certain point they get this message and we don't a work around.
"DELIVERY FAILURE: Error transferring to MAIL.UCG.COM;HTMLAPIProblem converting to HTML"
We tried starting a new email and pasting previous history in it, but that did not work. It only works when a user "breaks the chain" and starts a new blank email.