[Dovecot] Dovecot - IMP - POP autentication problem

[Carlos Bergero]

Hi,
Recently I have to rush one of my mail servers to a new installation, 
actually GNU Linux/Debian Sarge, the system run dovecot 0.99.14 for pop 
and imap, and the web server, other machine, uses horde2/imp3.
The problem is the following, pop clients including the imp3 cant log 
properly apparently, the even when a connection is made to pop3 dovecot 
trys to make a secure connection, I found this after sniffing the 
connection between the web server and the mail server, for some reason, 
imp cant handle it well and the some clients like OutLook also have 
troubles working this out.
For now I work around this problem by disabling the ssl/tsl support, but 
that's not the solution I need.
So the question is can I disable this feature without loosing the secure 
connection and how can I do it?

Cheers,
rak