On previous post, we can relay email based on user/domain receiver. But, on this guidance is reverse from previous post. ie the relay based on user/domain sender. Zimbra supported for multi domain. You can have many domain in one Zimbra server. I have condition where either domain cannot sending to some domains. For example, i have ..
Archiving is one of important thing on email. Archiving of email, usually used for audit complain or other needed. Actually, feature archiving is there on Zimbra paid version (Network Edition) and only there for Professional edition. If you often use webmail, you can archive inbox item, sent item even draft item as described at Zimbra wiki ..