HI All

I have installed zCS-6.0.0 on ubuntu desktop operating system, with bind9 as DNS.

I have configured Microsoft Outlook 2007 with zimbra mail server
and I can receive mails from server, but I cannot able to send a mail to users/outside network.

when I see the logs it is showing as :

Nov 27 15:02:43 mail postfix/smtpd[16640]: NOQUEUE: reject: RCPT from unknown[]:
554 5.7.1 <ravikumar.dhara@gmail.com>: Relay access denied; from=<admin@ityug.com>
to=<ravikumar.dhara@gmail.com> proto=ESMTP helo=<ityug3>

Thanks in Advance