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

  • 1 reply
  • 0 have this problem
  • 7 views
  • Last reply by christ1

more options

When I send an email, I get a response of: "Sending of the message failed. An error occurred while sending mail. The mail server responded: stray newline detected. see http://cr.yp.to/docs/smtplf.html. Please check the message and try again." I contacted my ISP and they said it was a Thunderbird update that caused this. Any way for me to make it so that I can send an email? No problem receiving them. I have a workaround using my ISP to send them at this time, but I would rather just use Thunderbird. They also said I could use a different Email program, but Thunderbird is so easy to navigate. Any help would be appreciated. Thank you.

When I send an email, I get a response of: "Sending of the message failed. An error occurred while sending mail. The mail server responded: stray newline detected. see http://cr.yp.to/docs/smtplf.html. Please check the message and try again." I contacted my ISP and they said it was a Thunderbird update that caused this. Any way for me to make it so that I can send an email? No problem receiving them. I have a workaround using my ISP to send them at this time, but I would rather just use Thunderbird. They also said I could use a different Email program, but Thunderbird is so easy to navigate. Any help would be appreciated. Thank you.

All Replies (1)

more options

What is your anti-virus software?