This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cannot send email messages

more options

Can receive but not send messages. Thunderbird requests the SMTP password, which is entered correctly but refused. Can access via webmail OK so passwords, etc are good. Have checked SMTP settings with ISP provider - all good.

Can receive but not send messages. Thunderbird requests the SMTP password, which is entered correctly but refused. Can access via webmail OK so passwords, etc are good. Have checked SMTP settings with ISP provider - all good.

All Replies (1)

more options

There's a troubleshooting article here: http://kb.mozillazine.org/Connection_errors_-_SMTP It would help if you could follow through the connection sequence and find out where it is failing. At the moment, on the basis of your description of the problem, there are so many things that might be going wrong that it's hard to know where to begin.