LDAP ERROR when changing domain name

[Mido3mad]

this error is happened when i am trying to change domain
first i rename hostname then i trying to change domain
from abc.com to xyz.com using the command
[zimbra@mail ~]$ zmprov -l rd abc.com xyz.com
ERROR: service.FAILURE (system failure: ZimbraLdapContext) (cause: javax.naming.CommunicationException mail.xyz.com:389)

i changing my hosts file and the split dns and mx records but it still give me that error

my hosts file
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
10.1.1.150 mail.xyz.com mail


any ideas can help???