Multiple email forwards
I found some old emails regarding this issue, but was unable to be clear as to if there is a way to achieve this...
I have current deployments that have one email account that forwards to several emails... and of course ma zimbraPrefMailForwardingAddress addr, addr2
Currently, admins can set multiple forwarding addresses for an account by setting zimbraMailForwardingAddress. (Or see admin console > individual account > forwarding tab > forwarding addresses hidden from the user.)
The end user can only set one value in their options/preferences (zimbraPrefMailForwardingAddress) which is a single valued in the LDAP schema.
Making it multi-value really calls for having an admin settable limit on how many you are allowed. Be sure to vote on: Bug 11299 - Allow user to set multiple forwarding addresses, need admin defined limit