Is zimbra 7 cbpolicyd stopping alias domain backscatter?

[John Siu]

Is cbpolicyd in Zimbra 7 configure to reject non-exist account with alias domain?

We upgrade from 6 to 7 and policyd was not running before and just enabled today. Then I did the following test:

$ telnet zimbra.example.com 25
Trying x.x.x.x...
Connected to zimbra.example.com.
Escape character is '^]'.
220 zimbra.example.com ESMTP Postfix
helo example.com
250 example.com
mail from: abc@a-random.com
250 2.1.0 Ok
rcpt to: test@alias-domain.com
250 2.1.5 Ok

test@alias-domain.com does not exist.

Am I doing a wrong test, or need more steps?

[John Siu]

According to Managing Domains - Zimbra :: Wiki

Do I still need to do the following step?

zmlocalconfig -e postfix_enable_smtpd_policyd=yes