Issues sending emails. "Can't connect to outgoing server (SMTP)
I started having issues with my Thunderbird account a few months ago where it tells me one of two errors. "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP)" or it asks me to re-enter my password for that email. All of my passwords are saved and if I close and reopen Thunderbird sometimes it resolves these issues for a day or so before they return. Sometimes if I receive the error, then save the email, close it out and reopen it will mail out just fine. Also when I do reenter my password sometimes it works, and other times it will not accept the password, even though I am 100% certain it is being entered correctly. Beginning to be very frustrated by this.
Opaite Mbohovái (1)
Check with your email provider about this.
Also see https://support.mozilla.org/en-US/kb/cannot-send-messages