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Originally Posted by camjohnson I've been attemtping to get zimbra opensource beta 2 working on a Red Hat enterprise rel 4 update2 that is installed in a DMZ. The dmz interface has a non routable address and the firewall has all of the appropriate ports open including 25 and 7025. When I turn dns lookups on in the server admin mta window I'm able to send mail to wherever I want, but I cannot receive mail. Turning the dns lookups off allows me to receive mail but not send it. The hosts table has the localhost.localdomain set at 127.0.0.1 and mail.xxxxx.org is set to 172.xxx.xxx.xxx. The external routable address is only set in dns. The zimbra.log indicates a failure of lmtp when dns is on and no failure when it is off.
We need some direction as to how to set zimbra to handle this.
Cam Johnson |
Zimbra appears to be doing the correct thing, with DNS lookups turned on - the issue seems to be a network problem.
With DNS lookups on, postfix attempts to connect to the public IP on the firewall, port 7025. Can you verify that this is allowed by the firewall, by telnetting from the postfix box to the public IP (NOT HOSTNAME) on port 7025? It's not uncommon for firewalls to refuse connections from internal addresses to public IPs.