Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Can't send email

  • 2 replies
  • 1 has this problem
  • 16 views
  • Last reply by nomad1949

more options

When I try to send email from Thunderbird a box comes up saying:-

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.live.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

This is a recent problem, following an update of W10, and also I think one for TB.

What do I do?

When I try to send email from Thunderbird a box comes up saying:- Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp.live.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again. This is a recent problem, following an update of W10, and also I think one for TB. What do I do?

All Replies (2)

more options

Chosen Solution

more options

I can now send email again. Thank you.