I want to change my main.cf configuration zimbraMtaMyNetworks on Zimbra 8. But somehow I cant see the changes after applying below commands as zimbra user.

1) zmprov ms 'zmhostname' zimbraMtaMyNetworks ' [::1]/128 [fe80::]/64'

2) zmprov modifyServer "mail.example.com" zimbraMtaMyNetworks ' [::1]/128 [fe80::]/64'

Even I cant see the changes after aplying as root user.

/opt/zimbra/bin/zmprov modifyserver mail.example.com zimbraMtaMyNetworks ' [::1]/128 [fe80::]/64'

If there are any other method please let me know.

I'm using Zimbra 8 in CentOS 6

Please help