we are using a zimbra server but we also have a novell groupwise server on our network. I'd like to do a per user transport table on postfix so it relays emails to specific users on the groupwise server.

I know about setting the transport_maps on the main.cf file on postfix as well as what to include in the file.

I'm just curious about the 'zimbra' way of doing this.

zimbra already has a transport map

smtpd_tls_loglevel = 3
smtpd_use_tls = yes
transport_maps = ldap:/opt/zimbra/conf/ldap-transport.cf
virtual_alias_domains = ldap://opt/zimbra/conf/ldap-vad.cf
virtual_alias_maps = ldap:/opt/zimbra/conf/ldap-vam.cf
virtual_mailbox_domains = ldap:/opt/zimbra/conf/ldap-vmd.cf
virtual_mailbox_maps = ldap:/opt/zimbra/conf/ldap-vmm.cf
virtual_transport = error

can I just add another transport map after this one? zimbra is working great so I don't want to break anything.