Totally confused here. I don't know if it is under RHEL 5 or CentOS 5.6, but you obviously have Bind installed somewhere. Additionally, webmin is a web-based tool which attempts to make administering services like Bind, Samba, etc. easier than having to do things at the command-line level. It is not a replacement for Bind. There are alternatives to Bind for setting up DNS services under Linux, but Bind is the most popular and you will be more likely to find help on these forums at least if you stick with Bind.
i don't have bind installed on RHEL 5. moreover i tried to install it but i can't understand the problem. it is installed fully but there are no associated directories or files created of bind. no named service. i spent a lot of time but could not solve that. kindly help me out. is there any alternative to get out of this problem? i have installed webmin1.560 on the same machine. but there is no bind server listed in the servers portion. can i do the same job using webmin without bind? is there any other alternative? please help me out.
Again, not sure what system you are running on (RHEL or CentOS), but these messages indicate there is a problem with your named.conf file on lines 28 or 29. The named.conf you previously posted only has about 15 lines, so either you've made changes to it, or you are working with the wrong named.conf file.
Aug 22 19:31:58 mail named: starting BIND 9.4.1 -u named -t /chroot/named -c /etc/named.conf
Aug 22 19:31:58 mail named: loading configuration from '/etc/named.conf'
Aug 22 19:31:58 mail named: /etc/named.conf:28: unknown option 'Read'
Aug 22 19:31:58 mail named: /etc/named.conf:29: unexpected token near end of file
Aug 22 19:31:58 mail named: loading configuration: unexpected token
Aug 22 19:31:58 mail named: exiting (due to fatal error)