I am new to Zimbra suite. I have Ubuntu 8.04LTS and installed ZCS 7.0.2 version. But I dont have registered domain only public IP from my ISP. I have connected my zimbra box under my DHCP server.
Where I can send mails to Gmail, yahoo, rediff, hotmail.
But cant send mails to other domains like vsnl.net, spcl.in, saharanext.com, etc.
I am getting deferred in zimbra.log file:
Aug 17 10:13:45 mail postfix/smtp: 3F7A417C2E0 : to=<email@example.com>, relay=mail.domain.com[public ip of saharanext.com]:25, delay=1.7, delays=0.04/1.2/0.49, dsn=5.0.0, status=bounced (host mail.domain.com[ip add] said:554 refused mailfrom because return MX does not exist (in reply to MAIL from command))
And only I can receive mails from Zimbra to zimbra. Other than that mail is not received form any other domain.
Getting error: DNS not found in Gmail box when I try to send to zimbra domain.
Any help would be appreciated.