Stefano, lascia il sarcasmo a casa per favore!  If I could decipher that error message I would have done that.  Is there a problem with this forum that people have a bad attitude when answering questions?  If someone has nothing helpful to say, rather say nothing at all.  I have been following these forums and it seems to be a recurrent issue.
These pages are supposed to be a help line for those in trouble, not a lecture in reading and searching manuals and posts.
Now...I have tried other email clients, and the problem persists.  The server is a pop server with pop3s for external access.  I have also deleted and re-created the outlook profile/s.  It is not an outlook problem as all the clients on the network behave in the same manner.
If there is a solution to this I'd like to know, if not just say so and I will migrate to another distro,plain and simple.  Sorry, but I have had enough of smart comments in this forum.