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

Cannot establish TLS with SMTP...wrong address, connection error 5

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by sfhowes

more options

An error occurred sending mail: The mail server sent an incorrect greeting: Cannot establish TLS with SMTP server 65.55.176.126:587, SSL_connect error 5:connection closed.

An error occurred sending mail: The mail server sent an incorrect greeting: Cannot establish TLS with SMTP server 65.55.176.126:587, SSL_connect error 5:connection closed.

All Replies (1)

more options

Is this for an Outlook/Hotmail type account? What do you have for the server settings under Tools/Account Settings/Outgoing Server (SMTP)? (For outlook/hotmail it should be STARTTLS security on port 587, normal password authentication, email address for the User name.)

If you have an anti-virus/security program scanning outgoing mail, disable that option and see if it helps.