SMTP problem

[Pascal Francq]

Hi,
Since two days, I have a smtp problem with KMail. When I try to send a email, 
it doesn't work, and I have no error message. I have try another smtp account, 
and it doesn't work either. And my default smtp account works from another 
computer with KMail.
The only thing is that I have installed postfix and remove it after. It is 
possible that something was changed with this installation, but I have no idea 
what.
Thanks.
-- 
Dr. Pascal Francq