Problem with DNS

Question

Hello,
I am relatively new to configuring DNS settings in Server Manager. Recently, my Kerberos relm stopped working and I am now getting this error message on the console:
configured name and reverse DNS name do not match (fileserver.occu-med.com != mail.occu-med.net), various services may not function properly - use changeip to repair and/or correct DNS
I did, for a short time, try to register the server as a mail server. However, due to the many issues I experienced, this was a short lived endeavor. Right now I am running 10.4.11 on an Xserv. The box is functioning as a Fileserver running AFP and SMB, DHCP server, DNS Server, Firewall and NAT, an AD Server, and a VPN server. I have had no issues with the other services, they are all functioning fine. The only problem with OD is that it cannot Kerborize if the DNS is not functioning properly.
I believe that the issue with the DNS can be attributed to the server being part of an external DNS relm as well as an internal DNS relm. There is definitely an entry for mail.occu-med.net in our ISP's DNS server, however on the internal network that I am running, occu-med.com, there is no such entry in our DNS records.
I have tried the changeip command "changeip LDAPv3/127.0.0.1 "externaladdress" 10.0.0.2 mail.occu-med.net fileserver.occu-med.com to no avail.
When I go into the Server Admin took to look at my network connections, it lists connection en0 (The outside portion of the NAT) as mail.occu-med.net. The connection en1 (the inside portion of the NAT) does not have an assigned DNS name.
When I go into the Terminal on the Xserv and type in "hostname" I get "Fileserver.occu-med.com." However when I type in "host fileserver.occu-med.com" I get the error "Host fileserver.occu-med.com not found: 3(NXDOMAIN)" When I type in "host externalip" I get "externalip.in-addr.arpa domain name pointer mail.occu-med.net."
Obviously the server is confused here, but how exactly can I fix the problem?

Answer 1

DNS was working right before the server was propagated to a mai server. I have set up our internal domain to mirror the external domain by entering all of the ISP specific DNS information into the server so that users can access mail.occu-med.com via the internet. I have also set up specific internal DNS names that are not shared with the outside world, such as fileserver.occu-med.com that I do not want published to the external DNS servers. The problem I cannot get around is where the entry mail.occu-med.net is coming from and why it persists. When I was messing around with the mail functions of OS X Server, I deliberately made two different domains, one for occu-med.net and one for occu-med.com. This was short lived as the confusion on where to connect for certain services was giving even myself a headache, let alone my users. Thats when I started delving into setting up our own internal DNS server to provide FQDN services to internal machines. I deleted all of the old information in the server for the previous DNS Zones, but apparently something has not changed.
Using a computer on the inside of my network, if I type into the console host mail.occu-med.net it returns "mail.occu-med.net has address 216.251.43.97"
If I type host 209.234.153.2 I get "2.153.234.209.in-addr.arpa domain name pointer mail.occu-med.net."
So, the server IS providing the wrong information to the internal clients somehow. The problem is that there is no mail.occu-med.net domain even hosted on the server. When I was original messing around with the server as a mail server, I had the connections reversed, en0 was the inside connection and en1 was the outside. I did have DNS working properly when i did this. Is it possible that somehow, while it may not be displayed in the Server Admin window, the current outside interface is still assigned the FQDN mail.occu-med.net?