GSSAPI Error Another one

Question

Hello All
I'm having a problem to login on my MacServer since yesterday when we got new connection and I had to change my DNS configuration.
No one can login, and on logs I got this error messages
To give a brief explanation about the problem, the server has 3 network interfaces 1 for external access (internet) and 2 for our internal networks. So with the new internet connection I had to change the external interface's IP address. So I've also changed it on the DNS (as you can see on the log before it was 172.16.XX.XX). But after that nobody can login.
System Log
+DirectoryService[61]: GSSAPI Error: Miscellaneous failure (Server not found in Kerberos database)+
Kdc Log
+Jun 18 10:50:09 server.domain.com krb5kdc[242](info): AS_REQ (7 etypes {18 17 16 23 1 3 2}) 81.145.128.82: ISSUE: authtime 1213782609, etypes {rep=16 tkt=16 ses=16}, [email protected] for krbtgt/[email protected]+
+Jun 18 10:50:10 server.domain.com krb5kdc[242](info): TGS_REQ (7 etypes {18 17 16 23 1 3 2}) 81.145.128.82: UNKNOWN_SERVER: authtime 1213779829, [email protected] for ldap/[email protected], Server not found in Kerberos database+
Kadmin command
+sudo kadmin.local -q listprincs | grep ldap+
ldap/[email protected]
My DNS Zone
+$TTL 86400+
+domain.com. IN SOA server.domain.com. sysadmin.domain.co.uk. (+
[phone] ; serial+
+3h ; refresh+
+1h ; retry+
+1w ; expiry+
+1h ) ; minimum+
+domain.com. IN NS server.domain.com.+
+domain.com. IN A 99.99.999.99+
+server IN A 99.99.999.99+
Inside my /Library/Preferences I've got 2 edu.mit.Kerberos files
edu.mit.Kerberos
edu.mit.Kerberos.UrLRdkjIuH7V7yG2QuH8e
One of them (the UrL*) is empty the other one has this configuration
+# WARNING This file is automatically created, if you wish to make changes+
+# delete the next two lines+
+# autogenerated from : /LDAPv3/127.0.0.1+
+# generation_id : 1093139664+
[libdefaults]
+default_realm = SERVER.DOMAIN.COM+
[realms]
+SERVER.DOMAIN.COM = {+
+kdc = server.domain.com+
+admin_server = server.domain.com+
[domain_realm]
+domain.com = SERVER.DOMAIN.COM+
+.domain.com = SERVER.DOMAIN.COM+
[logging]
+admin_server = FILE:/var/log/krb5kdc/kadmin.log+
+kdc = FILE:/var/log/krb5kdc/kdc.log+
I've read all the topics about it but till now I couldn't solve my problem.
Is anyone able to help me?
Thanks

Answer 1

I even tried the online support option using my PlayBook's serial number; when I entered my email address, it said that it failed to recognise it.
Yet in the tablet it clearly shows the right one.
I am beginning to have serious doubts about having bought it in the first place.
Techie Charlie.
Trying to stay loyal to BlackBerry.
Currently using BBM on my Android Motorola Moto G