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.

I get this error message when hitting send. I dont know what to do. I

  • 1 பதிலளி
  • 1 இந்த பிரச்சனை உள்ளது
  • 1 view
  • Last reply by christ1

PinkPanda
PinkPanda
more options

An error occurred while sending mail. The mail server responded: 5.7.0 Must issue a STARTTLS command first. u5sm5345151wia.17 - gsmtp. Please verify that your email address is correct in your Mail preferences and try again. 

have tried putting in STARTTLS in the server settings as suggested by someone else but that doesnt work. HELP!
An error occurred while sending mail. The mail server responded: 5.7.0 Must issue a STARTTLS command first. u5sm5345151wia.17 - gsmtp. Please verify that your email address is correct in your Mail preferences and try again. have tried putting in STARTTLS in the server settings as suggested by someone else but that doesnt work. HELP!

All Replies (1)

christ1
christ1
  • Top 25 Contributor
more options

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