Looks like I had the same problem as alot of people, even with the permissions set to the dirs properly as well as that symlink linking /etc/bind to the chroot jail still failed ot get my updates to post.
I did the following things:
- updated the server_bind_zonefile_dir value in the mysql db to /var/named/chroot/var/named
- removed the lockfile
- added a dns entry to a domain in ISPConfig
- deleted that entry
after doing those things, the zone file was updated. I'm wondering, how long do those lockfiles sit around, are they supposed to go away ever?