i need some inputs ...

we're trying to migrate HE emails to Zimbra but disabled the firewall policies, thus port 7071 is not active. ive tried to use the migration wizard tool without specifying the port 7071 and it failed. i think the migration tool requires to pass thru port 7071.

is there other way to migrate emails without using the tool and port 7071?
HE mailstore & Zimbra server are connected to a Test Server w/ dual nic, one going thru the HE and another one going thru Zimbra.