[CentOS] Postfix: postconf warning on install with yum

Hi guys!
I'm tryng to install Postfix on my CentOS local web server.
I use CentOS plus repositories, PHP and MySQL 5, Apache 2, ProFTPd, 
Webmin and Virtualmin

When i Try to install Postfix by yum I receive this kind of warning:
/usr/sbin/postconf: /usr/lib/mysql/libmysqlclient.so.14: no version 
information available (required by /usr/sbin/postconf)

Postfix seems to be installed after that, but there's no way to make it 
up and running...
There's a known solution for this problem?

Thanks!

Nando
(I'm Italian, sorry for my "bed" english! :-) )
Chiacchiera con i tuoi amici in tempo reale! 
 http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com