One of our users belonging to the All@ group has enabled mail forwarding. Senders receive a non-delivery message when sending for an address that someone setup as a forwarding address.
The address doesn't provide any detail for who the user is but we need to ensure they are receiving mail.
I was unable to find any way within the zimbra administration to search by forwarding address.
I know I can use "zmprov sa" to run an LDAP query, but I can not find a list of LDAP attributes, specifically the Forwarding address attribute.