The SERVFAIL message you see is an indication of a syntax error somewhere in the config file. Can you post it and I can pan through it? Did you remember to remove/add/change MX records from the file? Also, how do you have your zones setup? Do you have a PTR record for your local machine? Was the old box authoritive or a forwarder? Ya have way too many loose ends here. I think the conf file would be the best bet at resolving this.

--TH13