[Dovecot] try to compile dovecot 2.0.11 with ssl support

[easy]

Hello,

I try to compile dovecot in Version 2.0.11 with ssl support on a CentOS 
4.5 system.
Installed packages are openssl and openssl-devel.
after "./configure --with-ssl=openssl" "make" "make install"the message is:
(also tried with CPPFLAGS="-I/opt/openssl/include" 
LDFLAGS="-L/opt/openssl/lib -ldl")

    Install prefix . : /usr/local
    File offsets ... : 64bit
    I/O polling .... : epoll
    I/O notifys .... : dnotify
    SSL ............ : yes (OpenSSL)
    GSSAPI ......... : no
    passdbs ........ : static passwd passwd-file shadow checkpassword
                     : -pam -bsdauth -sia -ldap -sql -vpopmail
    userdbs ........ : static prefetch passwd passwd-file checkpassword nss
                     : -ldap -sql -vpopmail
    SQL drivers .... :
                     : -pgsql -mysql -sqlite

so it looks like SSL support is included, but when I start dovecot the 
message is:

    # 2.0.11: /usr/local/etc/dovecot/dovecot.conf
    # OS: Linux 2.6.18-128.1.1.el5.028stab062.3ent i686 CentOS release 
4.5 (Final)
    passdb {
      driver = pam
    }
    protocols = imap
    ssl_cert = </etc/ssl/certs/dovecot.pem
    ssl_key = </etc/ssl/private/dovecot.pem
    userdb {
      driver = passwd
    }
    doveconf: Error: SSL support not compiled in but ssl=yes
    doveconf: Fatal: Error in configuration file 
/usr/local/etc/dovecot/dovecot.conf: SSL support not compiled in but ssl=yes

I also tried to use the source files of openssl and compile openssl by 
myself, but the error is the same.

thanks

 Regards Markus