Thank for your response.
It strange because my dns is in the same subnetwork, no hope need to join it :
Code:
root@zimbra:~# traceroute 10.2.44.43 (dns ip address)
traceroute to 10.2.44.43 (10.2.44.43), 30 hops max, 40 byte packets
1 10.2.44.43 (10.2.44.43) 0.542 ms 0.634 ms 0.736 ms
There is no problem to resolv the zimbra hostname
Code:
root@zimbra:~# host -t mx mydomain.com
mydomain.com mail is handled by 5 zimbra.mydomain.com.
root@zimbra:~# host -t a zimbra-1-por1.mydomain.com
zimbra.mydomain.com has address 10.2.44.219