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.

Rohkem teavet

Email worked fine one day and not the next... Getting "mail server responded: STARTTLS first (#5.5.1).

  • 1 vastus
  • 1 on selline probleem
  • 12 views
  • Viimati vastas Mr B

more options

Email worked fine one day and not the next... Getting "mail server responded: STARTTLS first (#5.5.1). Verify your email address is correct in your account settings and try again".

Got this error out of the blue. Was able to roll back my thunderbird version on my desktop and temporarily fix the error but that method didn't work on my laptop. Nothing changed, settings are the same on the functioning desktop and the malfunctioning laptop.

I've tried running in safe mode, no success.

Any help would be greatly appreciated.

Email worked fine one day and not the next... Getting "mail server responded: STARTTLS first (#5.5.1). Verify your email address is correct in your account settings and try again". Got this error out of the blue. Was able to roll back my thunderbird version on my desktop and temporarily fix the error but that method didn't work on my laptop. Nothing changed, settings are the same on the functioning desktop and the malfunctioning laptop. I've tried running in safe mode, no success. Any help would be greatly appreciated.

All Replies (1)

more options

Just switched to Outlook after 15 years with Thunderbird...