The threads about server settings changing appear to be correct. The problem is finding the right variant of the incoming server if you don't have an iPhone, iPad, or don't use a Mac. I finally found the right server by checking my settings in Apple Mail on my Mac.
There is tremendous variability in the user interfaces across Android devices. Usually in the advanced settings. My Droid only offers TLS security, not SSL. The Droid 4 has a bunch of extra options not on my phone. Samsung and HTC phones are different. iPhones hide most of the details if you use auto setup.