My settings somehow changed to BTInternet yahoo and refuses now Thunderbird to send, but can still receive

Thunderbird has worked perfectly for a long time, but yesterday, the outgoing server suddenly changed of BTInternet to Yahoo, and I'm unable to send more. I haven't touched the settings and I realized a full system scan and malware. Despite changing the settings back, I always get error messages and Thunderbird doesn't send emails. Attached screenshots.

BT uses Yahoo as email provider.
Yahoo screwed up (again) and managed to not renew cert for smtp.mail.yahoo.com. There is nothing you can do about it other than to complain to yahoo. Yahoo can only solve the problem. I guess that it will not take too long.

Tags: Thunderbird

Similar Questions

Maybe you are looking for