On Fri, 2018-12-28 at 13:43 -0700, home user via users wrote:
The problem that motivated this thread seems to have (magically!) disappeared. Perhaps the problem was on the verizon-yahoo end.
That does happen.
Also, if you've had a few unsuccessful connections, a server may lock you out for a prolonged time. Trying out a few different connection configuration options in a too short timespan may be enough to put you on the naughty list.