Problem: Recently getting error message in Thunderbird (now using v. 52.5, same error in older versions): "Login to server imap.earthlink.net failed" "Retry, enter new password, cancel". Problem occurred never, then once in a while, now always. Contacted Earthlink support to see if settings changed, they were useless. Is there someplace where I can find what the configuration / settings should be to use Thunderbird and with Earthlink email? Asked this question on this forum last week but ISP/earthlink didn't help.