Issue: MX Record & Multi-domain

[wcbenyip]

Hi ALL,

I am now setting up the OS Zimbra 4.5.5 on OpenSUSE 10.2, however, I reached the same mx problem like other ppl here -> can send out email but no one received even internal or external a/c~ Does there anyone could help? Here is my case...

Requirement
Setup ONE single mail server for two different sub-domain (i.e. group.domainB.com & group.domainC.com, as the domainB.com & domainC.com are used for other purpose), and let the two group of PCs to have their own email address which could be used for internal and ONLY capable of sending/receiving mails to/from domainB.com & domainC.com~

Zimbra Server (OS Zimbra 4.5.5) on OpenSUSE 10.2
I would like to set it as domainA.com
Internal IP: 192.168.1.10/24
NAT for domainB.com: 10.10.10.10 (group.domainB.com)
NAT for domainC.com: 10.10.20.10 (group.domainC.com)
Hostname: zimbra (i.e. zimbra.domainA.com)
-----------------------------------------------------
Content of /etc/hosts
-----------------------------------------------------
127.0.0.1 localhost
192.168.1.10 zimbra.domainA.com zimbra
127.0.0.2 group.domainB.com shop
127.0.0.3 group.domainC.com shop

Internal DNS setting
'A' record is set for zimbra.domainA.com
Remark: There is NO DNS for domainB.com & domainC.com internally

External DNS setting
for domainA.com ----
didn't added anything even zimbra.domainA.com

for domainB.com ---
'A' record - group.domainB.com, 10.10.10.10
'MX' record - (pointed to another production mail server)
subdomain 'MX' record - group.domainB.com

for domainC.com ---
'A' record - group.domainC.com, 10.10.20.10
'MX' record - (pointed to another production mail server)
subdomain 'MX' record - group.domainC.com

Firewall policy
1/ ZimbraServer ----> ANY services ----> External (Internet)
2/ External (Internet) ----> http/https/7071/ping ----> ZimbraServer-B (NATed)
3/ External (Internet) ----> http/https/7071/ping ----> ZimbraServer-C (NATed)
Remark: Under current circumstance, I still haven't catered for the requirement of restricting the email communication with outside domains.

Problems
1/ Is it correct to set the Zimbra smtp server as group.domainB.com? (or even group.domainC.com should be the same result?)

2/ From both internal or external, I can resolve the domainB.com & domainC.com to show the mx record of the proper external IP, and even can ping to the proper external IP with group.domainB.com & group.domainC.com. However, I still can only send emails... but no one could received .....

I know it's a complicated scenario and maybe I have set it up totally wrong...... please kindly help to advise/suggest~ Many thanks!!

[phoenix]

Set-up Zimbra for the primary domain with this in your /etc/hosts file:

127.0.0.1 localhost.localdomain localhost
192.168.1.10 zimbra.domainA.com zimbra

Make sure that this domain has DNS A & MX records and you can send and receive email. When that's done just create the second domains on the Zimbra server the just add DNS A & MX records for your additional domains.

You won't actually need internal LAN DNS records for the secondary domains unless you need to use http://yourdomainb.com as the url for users to get their mail.

[wcbenyip]

Thanks phoenix~

I have done what you said.... the first time, I can sent out the email to a yahoo account, but cannot deliver to the a/c on the same domain (i.e. @domainB.com).... which is the same email to both accounts~

And later on, I cannot sent out any mails to any accounts even internal or external... and I found that in the account@domainB.com on zimbra admin web panel, it's saying that it's using the mail server "zimbra.domainA.com"~ this make me confused.....

Probably something is wrong during my installation, here is the config.4379 file content:
----------------------------------------------------------------------------------------------------------------------------
AVUSER=admin@group.domainB.com
CREATEADMIN=admin@group.domainB.com
CREATEDOMAIN=group.domainB.com
DOCREATEADMIN=yes
DOCREATEDOMAIN=yes
DOTRAINSA=yes
EXPANDMENU=yes
HOSTNAME=zimbra.domainA.com
HTTPPORT=80
HTTPSPORT=443
IMAPPORT=143
IMAPPROXYPORT=143
IMAPSSLPORT=993
IMAPSSLPROXYPORT=993
JAVAHOME=/opt/zimbra/java
LDAPHOST=zimbra.domainA.com
LDAPPORT=389
MODE=both
MTAAUTHHOST=zimbra.domainA.com
MYSQLMEMORYPERCENT=30
NOTEBOOKACCOUNT=wiki@group.domainB.com
POPPORT=110
POPPROXYPORT=110
POPSSLPORT=995
POPSSLPROXYPORT=995
REMOVE=no
RUNAV=yes
RUNSA=yes
SMTPDEST=admin@domainB.com
SMTPHOST=group.domainB.com
SMTPNOTIFY=yes
SMTPSOURCE=admin@group.domainB.com
SNMPNOTIFY=yes
SNMPTRAPHOST=zimbra.domainA.com
SPELLURL=http://group.domainB.com:7780/aspell.php
STARTSERVERS=yes
SYSTEMMEMORY=0.5
TOMCATMEMORYPERCENT=40
TRAINSAHAM=ham.zvvy.b19m@group.domainB.com
TRAINSASPAM=spam.an8kjxmijr@group.domainB.com
UPGRADE=yes
USEIMAPPROXY=no
USESPELL=yes
INSTALL_PACKAGES="zimbra-apache zimbra-core zimbra-ldap zimbra-logger zimbra-mta zimbra-snmp zimbra-spell zimbra-store "
----------------------------------------------------------------------------------------------------------------------------

I just though that it should use the name of zimbra.domainA.com for the LDAP to host all of the accounts for both domainB.com & domainC.com, so I didn't change it to be group.domainB.com... maybe this is the reason to make the wrong way.... should I really need to change ALL of the name in BLUE to be group.domainB.com instead?? And is it correct to use group.domainB.com as the smtphost, so that the a/c of group.domainC.com will use it as smtp server also? Or it will use a separate smtp host for each new created domain?

Thanks for anyone could guide me to leave the headache suffering~

[wcbenyip]

Oh.... it seems that the most critical one is the LDAPHOST? I think I should change it to "group.domainB.com" instead of "zimbra.domainA.com"..... as I have re-installed ZCS so many times and only left the LDAPHOST, HOSTNAME & SNMP one as zimbra.domainA.com, found that the mail server for the user accounts created under group.domainB.com is still using zimbra.domainA.com ........

OK, I will re-install it again.... and change all of the name to be "group.domainB.com" except the HOSTNAME......

[wcbenyip]

OK~ Finally, I have given up the previous idea..... now it's working with below setting:

1/ Added A & MX record for zimbra.domainA.com
2/ Added sub-domain of group.domainB.com and point the MX record to zimbra.domainA.com
3/ Re-install the ZCS 4.5.5 (forgot how many times of such procedures....)
4/ Let the zimbra.domainA.com as the smtphost, ldaphost, mta auth...

Up to this moment, the account@group.domainB.com & account@group.domainC.com could send/receive mails to/from both of internal & external domains~

[countupir]

OK~ Finally, I have given up the previous idea..... now it's working with below setting:

1/ Added A & MX record for zimbra.domainA.com
2/ Added sub-domain of group.domainB.com and point the MX record to zimbra.domainA.com
3/ Re-install the ZCS 4.5.5 (forgot how many times of such procedures....)
4/ Let the zimbra.domainA.com as the smtphost, ldaphost, mta auth...

Up to this moment, the account@group.domainB.com & account@group.domainC.com could send/receive mails to/from both of internal & external domains~

I am having the same problem and am going to try your fix on my server. From what I understand you used the main server domain as the MX record for the other domains on the server.

We'll see what happens. Thanks for the post