[SOLVED] EXchange 2007 to Zimbra

[Kris]

Hi,
I installed Zimbra as alternative to Exchange 2007.
For the time of conversion I would like to keep both system parallel with different domain names.
Externaly:
Users in both domains can send and receive emails to/from Internet.
Internally:
Zimbra Users has no problem sending emails locally (Same LAN subnet) to Exchange but Users in Exchange can't send email locally to Zimbra Users.
From Exchange Server I can:
ping Zimbra
telnet Zimbra on port 25 and sent email to the user
nslookup return proper Zimbra internal MX record
I'm using MS DNS servers.
Does anybody known what I'm missing?
Kris

[phoenix]

I presume you've set-up a Split Domain, what errors are you seeing when a user tries to send an email?

[Kris]

Hi Bill
Yes it is split DNS. I have Linux external DNS server and MS AD internal DNS server.
Here is the log file from exchange. The zimbra.log don't notice any event at that time.
Identity : EXHUB1\20598
DeliveryType : DnsConnectorDelivery
NextHopDomain : mydomain.com
NextHopConnector : ea6a2e25-6edf-4dbc-aa39-581a9584874d
Status : Retry
MessageCount : 12
LastError : 451 4.4.0 Primary target IP address responded with: "421 4.2
.1 Unable to connect." Attempted failover to alternate host,
but that did not succeed. Either there are no alternate hos
ts, or delivery failed to all alternate hosts.
LastRetryTime : 8/21/2010 7:22:35 AM
NextRetryTime : 8/21/2010 7:32:56 AM
IsValid : True
ObjectState : Unchanged

Thx
Kris

[Kris]

Hi Bill,
I have two diffirent domains names I don't need run Split Domain
Cheers
Kris

[Kris]

Hi Bill,
Stupid me.
I have selected in Hub transport use external DNS.
After unchecked the box mail start flowing
Thanks for you help
Kris