The SMTP setting on my laptop is the same as the SMTP settings on my
desktop & the desktop can send emails.
Laptop is new with windows 7 & the latest version of TB, I have also
tried smtp in lower case letters & it still does not work.
UPDATE
It was a firewall problem, TB did not like the web Root firewall so I
turned it off & turned on the windows firewall & it's working now.
I have also tried smtp in lower case letters & it still does not work.