I have a zimbra error:
When I try to send a e-mail from bbb@bbb.com(@bbb.com is not a zimbra domain) to <aaa@aaa.com>(@ aaa.com is my zimbra domain) a get the following error on @bbb.com domain:

Code:
Failed to deliver to '<aaa@aaa.com>'
SMTP module(domain [192.168.1.100]) reports:
 host 192.168.1.100 says:
 504 5.5.2 <aaa>: Recipient address rejected: need fully-qualified address

Original-Recipient: 	rfc822;<aaa@aaa.com>
Final-Recipient: 	rfc822;<aaa>
Action: 	failed
Status: 	5.0.0
Why Original-Recipient is <aaa@aaa.com> and Final-Recipient is <aaa>?

I look in to my /var/log/zimbra.log and i see this:
Code:
Jun 12 15:28:23 zmail postfix/smtpd[796]: connect from mail.bbb.com[192.168.1.200]
Jun 12 15:28:23 zmail postfix/smtpd[796]: NOQUEUE: reject: RCPT from mail.bbb.com

[192.168.1.200]: 504 5.5.2 <aaa>: Recipient address rejected: need fully-qualified address; 

from=<bbb@bbb.com> to=<aaa> proto=SMTP helo=<bbb.com>
Jun 12 15:28:23 zmail postfix/smtpd[796]: disconnect from mail.bbb.com[192.168.1.200]
What is mean "Recipient address rejected: need fully-qualified address"?
Thanks!