FYI, from my limited understanding, if the opt out had functioned properly on receipt of the message, it would have not violated the CAN-SPAM act.
However, with the broken opt out (most likely they never tried it outside of their own network as the error was a relay issue) they did violate the CAN-SPAM act.
At this point, I am comfortable that my DATA privacy was protected and that IB did not sell my info to a third party without my notice.
I have ensured that I have unsubscribed to any FT mailings (I had done this once before but I have done it again) and if I receive any more email at this point it will be considered SPAM as I have withdrawn my consent to receive any materials promotional or administrative from FT.
Dan