For quite a while... I have been trying to get our company to adopt Zimbra.

One of the largest "pain points" right now is our student distribution lists - in particular, locking those lists down (ie: we don't want one disgruntled student emailing every student at the campus with inappropriate stuff...).

Currently, we use postfix to implement this.

In the past, I have inquired with Zimbra and had understood at the time that this functionality was not present. Searching the forums gives me some very outdated posts (2005?) where it is confirmed that Zimbra does have distribution lists - but no ACLs or approved sender rules, etc.j

Also, if the feature is present, is there a way to manipulate it through a web GUI or API?

Could someone give me an update on this feature?