Cannot establish TLS with SMTP...wrong address, connection error 5
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.
Alla svar (1)
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.