I can't send email

[dhaoui.walid]

yesterday i (nearly) successfully installed an ox hyperion on centos4.4 but i have one problem left with postfix (i cant send email).

when i try to send an email to an other user on this server i get the following error in /var/log/mail.log:


log

Jun 11 16:02:20 ns39989 imap[16837]: open: user wdhaoui opened INBOX
Jun 11 16:02:54 ns39989 postfix/smtpd[21029]: fatal: unsupported dictionary type: mysql
Jun 11 16:02:55 ns39989 postfix/master[19846]: warning: process /usr/libexec/postfix/smtpd pid 21029 exit status 1
Jun 11 16:02:55 ns39989 postfix/master[19846]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Jun 11 16:03:19 ns39989 postfix/cleanup[21102]: fatal: unsupported dictionary type: mysql
Jun 11 16:03:20 ns39989 postfix/master[19846]: warning: process /usr/libexec/postfix/cleanup pid 21102 exit status 1
Jun 11 16:03:20 ns39989 postfix/master[19846]: warning: /usr/libexec/postfix/cleanup: bad command startup -- throttling
Jun 11 16:03:25 ns39989 master[3592]: process 16837 exited, status 0
Jun 11 16:03:55 ns39989 postfix/smtpd[21135]: fatal: unsupported dictionary type: mysql
Jun 11 16:03:56 ns39989 postfix/master[19846]: warning: process /usr/libexec/postfix/smtpd pid 21135 exit status 1
Jun 11 16:03:56 ns39989 postfix/master[19846]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling


in the wiki V. Installing/Configuring Mail

libnss-mysql-bg
postfix-mysql

I cant find libnss-mysql-bg and postfix-mysql for centos 4.4

think you