As a result of modification zone option "Email address" through webmin under "Edit Zone Parameters" (in my case, primary zone), in the directory / etc / bind in the file zone email address is changed to an incorrect (in the address are incorrect characters) then rezolving not work for records from this zone.
If you change manually via the console in your zone email address in webmin this address does not appear in the same: user \ @ mail @ com
ubuntu 9.04 server , BIND 9.5.1-P2
What were the incorrect characters exactly? And what email address did you enter?