Getting "Connection Refused" in Mozilla Thunderbird IMAP account
I need to maintain two email accounts, the "other" account is at gmail.com (Google). I use IMAP, and leave mail on the servers because I don't have all that much disk space.
Starting around 23-24 July, I started having problems with the gmail account. Not the issue here, of course.
Suddenly today (2l July), I get "Connection Refused" in Thunderbird on both accounts. I'm not even sure how to diagnose the problems.
TIA for any and all assistance.