I installed Ubanutu 18.04 with Zimbra Collaboration 9
this is in my lab environment.
-In this lab my windows domain is sample.net and the exchange mail server is internalservername.sample.net
-My DC, internalDCservername.sample.net, has a dns record for my new internalubantu1804servername.sample.net which is installed on a vmhost on that same sample.net domain.
-The ZIMBRA install is using the domainname sample.dev and all user accts are using extension sample.dev
-My existing exchange server users have mail accts that are sample.net accts
-We also need to send mail OUTSIDE of our lab to other email address (in this case I will call it sample.com for simplicity)
-My existing exchange server is NOT acting as a relay server at all for Zimbra it is on its own, it has its own external DNS MX and A record.
My problem is this:
-I have no mail routing issues from either the .net accts or the .com accts TO the .dev accts
-I have no mail routing issues FROM .dev to .com
HOWEVER
-Mail is getting stuck in deferred as it is trying to send to my DC server on port 25.
I got every confused with your documentation as most of it referred to earier versions of Ubantu that didnt use Netplan. My UBantu does NOT have DNS server installed at all.
I really do NOT want to use my exchange server as the relay I want this environment self sufficient.
What did I do incorrectly?:
host file is pointing to internal addresss of the zimbra server aka sample.dev
/etc/bind/named.conf.options is pointing to the external IP address of our Zimbra MX record for the sample.dev
the netplan shows DNS server as my internalip address of the DC.
- netplan data
- NetplanforZimbraServer.png (12.66 KiB) Viewed 7239 times
