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

Thunderbird emails

  • 1 resposta
  • 0 have this problem
  • 17 views
  • Last reply by christ1

more options

I can receive emails but cannot send them although it worked for a little while after an update. Here`s the message which appeared Sending of the message failed.The message could not be sent because connecting to Outgoing server (SMTP) relay.force9.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. I have checked and everything is ok

I can receive emails but cannot send them although it worked for a little while after an update. Here`s the message which appeared Sending of the message failed.The message could not be sent because connecting to Outgoing server (SMTP) relay.force9.net failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. I have checked and everything is ok

All Replies (1)

more options

See https://support.mozilla.org/kb/cannot-send-messages

Who is your email provider?

What is your anti-virus software?