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I can't send an email - "STMP AUTH is required for message submission." How do I correct this?

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I can receive emails, but when I try to send I get the message above. I've tried turning turning off the computer, but it doesn't change it. Normally, when the email is turned off, I have to enter a password, but I don't know where to put it. It isn't asking for it.

I can receive emails, but when I try to send I get the message above. I've tried turning turning off the computer, but it doesn't change it. Normally, when the email is turned off, I have to enter a password, but I don't know where to put it. It isn't asking for it.

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Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (email) transmission. Not used in a web browser.

You posted in the Firefox support fora queue. Firefox doesn't do email, it's strictly a web browser.

If you are using Firefox to access your mail, you are using "web-mail" such as Yahoo!Mail or Gmail. You need to seek support from your service provider or a forum for that service.

If your problem is with Thunderbird, let us know and we can move this thread to the Thunderbird support queue.

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Oh, sorry. I'm almost totally ignorant when it comes to this stuff. My email is Mozilla-Thunderbird. You'll send my question where it needs to go? Thank you.