I don't think anyone has any idea how to do it with 5.5 yet. Nathan responded, and affirmed that many people are a bit puzzled, but aparently he ran afoul of the powers that be in the process, and I haven't heard from him since. 
I was trying to figure out the CVM authentication required to get the authenticated SMTP running, but not being a strong linux user, I'm a bit nervous about killing my server...  

I'm also trying to find my old qmail books to see if I can find some way to use the qmail configuration files to set it up.
I would suggest installing 5.1.2 and using his Nathan's pop-before-smtp with obtuse. (funny the front end with the most documentation was "obtuse")  

Sorry, but that's all I've got for now....
Edgar de Leon wrote:
> 
> Hello list!, i need help 
> 
> i want to be able to give mail accounts to all the users in
> my company, but i
> need just 10 got internal and external email, the rest of the
> people i need
> only can send mail to my own domain, just internal, how can i
> do that?
> 
> thanks 
> 
> Edgar de Leon