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.

Avatar for Username

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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Thunderbird

  • 1 èsì
  • 0 ní àwọn ìṣòro yìí
  • 1 view
  • Èsì tí ó kẹ́hìn lọ́wọ́ david

stony lake
stony lake
more options

I am unable to send email messages on Thunderbird. This problem just began about a week ago. Is there a fix? When I try to send a message, this comes up: "Sending of the message failed."

"The message could not be sent because connecting to the Outgoing server (SMTP) 587 failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again."

It seems like a lot of Thunderbird users are having the same problem. Lee Peterson

I am unable to send email messages on Thunderbird. This problem just began about a week ago. Is there a fix? When I try to send a message, this comes up: "Sending of the message failed." "The message could not be sent because connecting to the Outgoing server (SMTP) 587 failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again." It seems like a lot of Thunderbird users are having the same problem. Lee Peterson

All Replies (1)

david
david
  • Top 10 Contributor
more options

Maybe if you post a screenshot of the SMTP server settings, someone here will have suggestions.