I spent a few minutes on that one and it is worth signalling : In the DNS Options of one of my "clients" I had added a "space" after the administrator mail. As a result it crashed the startup of my bind named server at ervery attempt. Of course by checking the faulty zone pri.* file you can see the additional space in the first line : @ IN SOA frs1.nameserver.com. admin.faultydomain.com . ( Notice the white space after the .com and before the . ( well it should not be there !