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

This thread was archived. Please ask a new question if you need help.

Thunderbird - outgoing email - send failure

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by Toad-Hall

vstase1960
vstase1960
more options

I have tried to send emails from my email server mail.peertechnical.net but I receive the following error message:

Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.peertechnical.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 used incoming server port 110 and outgoing port 25 (same as my outlook setup).

I receive incoming emails all right.

Regards,

Vijay Tase

I have tried to send emails from my email server mail.peertechnical.net but I receive the following error message: Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.peertechnical.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 used incoming server port 110 and outgoing port 25 (same as my outlook setup). I receive incoming emails all right. Regards, Vijay Tase

All Replies (1)

Toad-Hall
Toad-Hall
  • Top 10 Contributor
more options

Assuming server settings are correct: Try Outgoing port 587 Connection Security: STARTTLS Authentication Method: Normal Password

Then check to see if the reason for not connecting is because server is not using up to date TLS protocols. Read info on resetting the TLS: