Then it triggers an error message in Thunderbird.
Smth like this: "Error entering smtp.mail.yahoo.com server" Ошибка входа на сервер «smtp.mail.yahoo.com»
It pops up from time to time, I think because of the threshold of a server of a number of messages allowed.

QUESTION:
Is there a way to mute/bypass such notification, so it would not require action of clicking OK on that message?
For ex., if there is an error, it would only be logged and then just keep going, trying again?